<article>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#article10_01_13_0149253</id>
	<title>Is RCA's Airnergy Snake Oil?</title>
	<author>kdawson</author>
	<datestamp>1263410820000</datestamp>
	<htmltext>Ben Newman writes <i>"Of all the tech that's come out of CES this week, nothing has gotten the blogosphere more excited then the <a href="http://gizmodo.com/5444850/rca-airnergy-charges-gadgets-with-nothing-but-wifi-signals">RCA Airnergy</a>. A lot of people love the thought of an ever-recharging cell phone, and the Airnergy promises to constantly charge its internal battery through 2.4GHz wireless signals. Neat idea, but as <a href="http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charger-harvests-electricity-from-wifi/#comment-29300952">some commenters have pointed out</a> the energy just isn't there to make this work &mdash; BOTECs for a full charge range from 100 days to 32 years. Plus, don't let the RCA brand fool you into thinking this must be from a legitimate company: RCA hasn't existed as anything more then a licensed brand name for a couple of decades. So what do Slashdotters think &mdash; real deal or 21st century hokum?"</i></htmltext>
<tokenext>Ben Newman writes " Of all the tech that 's come out of CES this week , nothing has gotten the blogosphere more excited then the RCA Airnergy .
A lot of people love the thought of an ever-recharging cell phone , and the Airnergy promises to constantly charge its internal battery through 2.4GHz wireless signals .
Neat idea , but as some commenters have pointed out the energy just is n't there to make this work    BOTECs for a full charge range from 100 days to 32 years .
Plus , do n't let the RCA brand fool you into thinking this must be from a legitimate company : RCA has n't existed as anything more then a licensed brand name for a couple of decades .
So what do Slashdotters think    real deal or 21st century hokum ?
"</tokentext>
<sentencetext>Ben Newman writes "Of all the tech that's come out of CES this week, nothing has gotten the blogosphere more excited then the RCA Airnergy.
A lot of people love the thought of an ever-recharging cell phone, and the Airnergy promises to constantly charge its internal battery through 2.4GHz wireless signals.
Neat idea, but as some commenters have pointed out the energy just isn't there to make this work — BOTECs for a full charge range from 100 days to 32 years.
Plus, don't let the RCA brand fool you into thinking this must be from a legitimate company: RCA hasn't existed as anything more then a licensed brand name for a couple of decades.
So what do Slashdotters think — real deal or 21st century hokum?
"</sentencetext>
</article>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748296</id>
	<title>How it worked</title>
	<author>DMorritt</author>
	<datestamp>1263376860000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>If you read the article:
<br> <br>
"<i>Airnergy takes the energy created by wi-fi signals and stores it in a rechargeable battery. At CES, the device's battery, which I believe was precharged with Wi-Fi power, was able to charge</i>"
<br> <br>
The key words are "<i>the devices battery, which I believe</i>", if he can charge a mobile battery from another battery then this is nothing new, however the charging of the "devices battery" is what is questionable in my mind, fooling yourself into thinking that the guy was sat in McDonalds or at home and powered if off his neighbours wifi is stupid.</htmltext>
<tokenext>If you read the article : " Airnergy takes the energy created by wi-fi signals and stores it in a rechargeable battery .
At CES , the device 's battery , which I believe was precharged with Wi-Fi power , was able to charge " The key words are " the devices battery , which I believe " , if he can charge a mobile battery from another battery then this is nothing new , however the charging of the " devices battery " is what is questionable in my mind , fooling yourself into thinking that the guy was sat in McDonalds or at home and powered if off his neighbours wifi is stupid .</tokentext>
<sentencetext>If you read the article:
 
"Airnergy takes the energy created by wi-fi signals and stores it in a rechargeable battery.
At CES, the device's battery, which I believe was precharged with Wi-Fi power, was able to charge"
 
The key words are "the devices battery, which I believe", if he can charge a mobile battery from another battery then this is nothing new, however the charging of the "devices battery" is what is questionable in my mind, fooling yourself into thinking that the guy was sat in McDonalds or at home and powered if off his neighbours wifi is stupid.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749696</id>
	<title>Re:Wireless power transmisstion is possible ...</title>
	<author>necro81</author>
	<datestamp>1263394020000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>No one is disputing that you can do wireless power transfer.  Tesla first demonstrated it well over 100 years ago.  However, this airnergy (good grief, what an idiotic name!) thing is pure snakeoil, as many have been able to demonstrate with about five minutes of back-of-the-envelope calculations.  WiFi is not a place to harness significant energy - it's too weak at its source, and it's too diffuse.  You might be able to use it to power a low-power sensor network, but definitely not something like a cellphone (or even charge a cellphone battery over time).</htmltext>
<tokenext>No one is disputing that you can do wireless power transfer .
Tesla first demonstrated it well over 100 years ago .
However , this airnergy ( good grief , what an idiotic name !
) thing is pure snakeoil , as many have been able to demonstrate with about five minutes of back-of-the-envelope calculations .
WiFi is not a place to harness significant energy - it 's too weak at its source , and it 's too diffuse .
You might be able to use it to power a low-power sensor network , but definitely not something like a cellphone ( or even charge a cellphone battery over time ) .</tokentext>
<sentencetext>No one is disputing that you can do wireless power transfer.
Tesla first demonstrated it well over 100 years ago.
However, this airnergy (good grief, what an idiotic name!
) thing is pure snakeoil, as many have been able to demonstrate with about five minutes of back-of-the-envelope calculations.
WiFi is not a place to harness significant energy - it's too weak at its source, and it's too diffuse.
You might be able to use it to power a low-power sensor network, but definitely not something like a cellphone (or even charge a cellphone battery over time).</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748530</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30756222</id>
	<title>Feeding the five hundred...</title>
	<author>techlover</author>
	<datestamp>1263377220000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I look at it like this...

There's no doubt it can harvest "some" energy but it is the equivalent of trying to harvest a field with a sickle when you're trying to feed China and what you really need is a combine harvester.</htmltext>
<tokenext>I look at it like this.. . There 's no doubt it can harvest " some " energy but it is the equivalent of trying to harvest a field with a sickle when you 're trying to feed China and what you really need is a combine harvester .</tokentext>
<sentencetext>I look at it like this...

There's no doubt it can harvest "some" energy but it is the equivalent of trying to harvest a field with a sickle when you're trying to feed China and what you really need is a combine harvester.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30756080</id>
	<title>Re:Snake Oil</title>
	<author>techlover</author>
	<datestamp>1263376620000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I'm sure that the device has the ability to be charged manually i.e. they probably plugged it into a USB port first to charge the internal battery and then used that to charge the blackberry. Either that or they used their time machine (displayed on the next stand) to transport an airnergy device (+ 100 wifi routers) back in time to 1973 in order to give it enough time to charge for the 2009 CES.</htmltext>
<tokenext>I 'm sure that the device has the ability to be charged manually i.e .
they probably plugged it into a USB port first to charge the internal battery and then used that to charge the blackberry .
Either that or they used their time machine ( displayed on the next stand ) to transport an airnergy device ( + 100 wifi routers ) back in time to 1973 in order to give it enough time to charge for the 2009 CES .</tokentext>
<sentencetext>I'm sure that the device has the ability to be charged manually i.e.
they probably plugged it into a USB port first to charge the internal battery and then used that to charge the blackberry.
Either that or they used their time machine (displayed on the next stand) to transport an airnergy device (+ 100 wifi routers) back in time to 1973 in order to give it enough time to charge for the 2009 CES.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749514</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749084</id>
	<title>illegal power density required</title>
	<author>hAckz0r</author>
	<datestamp>1263388620000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Any device that radiates enough energy in a given frequency band to be equivalent to even the smallest battery would be illegal under the current FCC guidelines. <p>

Wireless Power Calculator	<br>
<a href="http://powercastco.com/wireless-power-calculator.xls" title="powercastco.com">http://powercastco.com/wireless-power-calculator.xls</a> [powercastco.com] <br>
<a href="http://www.powercastco.com/resources/" title="powercastco.com">http://www.powercastco.com/resources/</a> [powercastco.com] </p><p>

Doing a simple calc with the above spreadsheet at 2.4 Ghz, 1W of radiated power, patch antenna, and five meters distance from the radiated power source, you would have just 0.040 mW of usable power, and at that, not enough to light even an average LED (30-150 mW req). So, don't be looking for that 'power on' indicator on this device. At that 'available power density' the charger might almost make up for its own internal losses from the battery charging circuitry. </p><p>

For any device of this kind to be useful it needs to be broad spectrum and not limited to a single frequency band such as the 2.4Ghz band stated here. If you could capture all available RF in a large enough swath of spectrum then this bulky device might have enough power to be competitive with a teeny tiny button battery. </p></htmltext>
<tokenext>Any device that radiates enough energy in a given frequency band to be equivalent to even the smallest battery would be illegal under the current FCC guidelines .
Wireless Power Calculator http : //powercastco.com/wireless-power-calculator.xls [ powercastco.com ] http : //www.powercastco.com/resources/ [ powercastco.com ] Doing a simple calc with the above spreadsheet at 2.4 Ghz , 1W of radiated power , patch antenna , and five meters distance from the radiated power source , you would have just 0.040 mW of usable power , and at that , not enough to light even an average LED ( 30-150 mW req ) .
So , do n't be looking for that 'power on ' indicator on this device .
At that 'available power density ' the charger might almost make up for its own internal losses from the battery charging circuitry .
For any device of this kind to be useful it needs to be broad spectrum and not limited to a single frequency band such as the 2.4Ghz band stated here .
If you could capture all available RF in a large enough swath of spectrum then this bulky device might have enough power to be competitive with a teeny tiny button battery .</tokentext>
<sentencetext>Any device that radiates enough energy in a given frequency band to be equivalent to even the smallest battery would be illegal under the current FCC guidelines.
Wireless Power Calculator	
http://powercastco.com/wireless-power-calculator.xls [powercastco.com] 
http://www.powercastco.com/resources/ [powercastco.com] 

Doing a simple calc with the above spreadsheet at 2.4 Ghz, 1W of radiated power, patch antenna, and five meters distance from the radiated power source, you would have just 0.040 mW of usable power, and at that, not enough to light even an average LED (30-150 mW req).
So, don't be looking for that 'power on' indicator on this device.
At that 'available power density' the charger might almost make up for its own internal losses from the battery charging circuitry.
For any device of this kind to be useful it needs to be broad spectrum and not limited to a single frequency band such as the 2.4Ghz band stated here.
If you could capture all available RF in a large enough swath of spectrum then this bulky device might have enough power to be competitive with a teeny tiny button battery. </sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>Fluffeh</author>
	<datestamp>1263415500000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>While I am certainly no degree holder or scholar in this field, I often wondered about the following:<br> <br>

A coil of wire with a current running through it emits a magnetic force. From memory, a magnetic force applied to a coil generates a current. Seeing as the earth is covered in a huge magnetic shell, how come people don't actually generate power this way? Is the magnetic field simply too weak compared to what is needed to generate a current of any value?<br> <br>

Perhaps one of you smart folk here might help me out with this little "backburner" thought that I have had for a while?<br> <br>

Much appreciated,<br>
- Fluffeh</htmltext>
<tokenext>While I am certainly no degree holder or scholar in this field , I often wondered about the following : A coil of wire with a current running through it emits a magnetic force .
From memory , a magnetic force applied to a coil generates a current .
Seeing as the earth is covered in a huge magnetic shell , how come people do n't actually generate power this way ?
Is the magnetic field simply too weak compared to what is needed to generate a current of any value ?
Perhaps one of you smart folk here might help me out with this little " backburner " thought that I have had for a while ?
Much appreciated , - Fluffeh</tokentext>
<sentencetext>While I am certainly no degree holder or scholar in this field, I often wondered about the following: 

A coil of wire with a current running through it emits a magnetic force.
From memory, a magnetic force applied to a coil generates a current.
Seeing as the earth is covered in a huge magnetic shell, how come people don't actually generate power this way?
Is the magnetic field simply too weak compared to what is needed to generate a current of any value?
Perhaps one of you smart folk here might help me out with this little "backburner" thought that I have had for a while?
Much appreciated,
- Fluffeh</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747934</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749938</id>
	<title>Re:Do **NOT** invoke Tesla</title>
	<author>lamare</author>
	<datestamp>1263395520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>This device, if it works, is anything *but* simple absorbtion, and with all respect, Tesla's magnifying transmitter is very relevant in understanding the possible working principle of this device, should it work. And this has (almost) nothing to do with a Tesla coil, which is indeed a step-up transformer.</p><p>"Tesla played with "harmonic" or "tuned" energy, eg take two tuning forks tuned to the same frequency, tap one to set it going, and hold it three inches away from the second one, the second one will start to vibrate, you just transferred energy."</p><p>Yes, but he did cover a bit more distance than just three inches:</p><p><a href="http://www.k-meyl.de/go/60\_Primaerliteratur/Wireless-Energy-Transfer.pdf" title="k-meyl.de" rel="nofollow">http://www.k-meyl.de/go/60\_Primaerliteratur/Wireless-Energy-Transfer.pdf</a> [k-meyl.de]</p><p>"New problems will occur to the HF-specialist, when in my experiment the distance between the transmitter and the receiver is 10-times more than the near zone.<br>Students of the TU-Berlin have shown and proofed this. Tesla as well had demonstrated a power transmission over 30 miles, whereas his near field was less than half a mile. I have shown how vortices are forming and how they come off the dipole, that the fields in the near zone of a Hertzian dipole are longitudinal scalar wave fields. But the scalar waves of Tesla and of my experiment show even more."</p><p>So, maybe you should educate yourself a bit more, before questioning the education of others.</p></htmltext>
<tokenext>This device , if it works , is anything * but * simple absorbtion , and with all respect , Tesla 's magnifying transmitter is very relevant in understanding the possible working principle of this device , should it work .
And this has ( almost ) nothing to do with a Tesla coil , which is indeed a step-up transformer .
" Tesla played with " harmonic " or " tuned " energy , eg take two tuning forks tuned to the same frequency , tap one to set it going , and hold it three inches away from the second one , the second one will start to vibrate , you just transferred energy .
" Yes , but he did cover a bit more distance than just three inches : http : //www.k-meyl.de/go/60 \ _Primaerliteratur/Wireless-Energy-Transfer.pdf [ k-meyl.de ] " New problems will occur to the HF-specialist , when in my experiment the distance between the transmitter and the receiver is 10-times more than the near zone.Students of the TU-Berlin have shown and proofed this .
Tesla as well had demonstrated a power transmission over 30 miles , whereas his near field was less than half a mile .
I have shown how vortices are forming and how they come off the dipole , that the fields in the near zone of a Hertzian dipole are longitudinal scalar wave fields .
But the scalar waves of Tesla and of my experiment show even more .
" So , maybe you should educate yourself a bit more , before questioning the education of others .</tokentext>
<sentencetext>This device, if it works, is anything *but* simple absorbtion, and with all respect, Tesla's magnifying transmitter is very relevant in understanding the possible working principle of this device, should it work.
And this has (almost) nothing to do with a Tesla coil, which is indeed a step-up transformer.
"Tesla played with "harmonic" or "tuned" energy, eg take two tuning forks tuned to the same frequency, tap one to set it going, and hold it three inches away from the second one, the second one will start to vibrate, you just transferred energy.
"Yes, but he did cover a bit more distance than just three inches:http://www.k-meyl.de/go/60\_Primaerliteratur/Wireless-Energy-Transfer.pdf [k-meyl.de]"New problems will occur to the HF-specialist, when in my experiment the distance between the transmitter and the receiver is 10-times more than the near zone.Students of the TU-Berlin have shown and proofed this.
Tesla as well had demonstrated a power transmission over 30 miles, whereas his near field was less than half a mile.
I have shown how vortices are forming and how they come off the dipole, that the fields in the near zone of a Hertzian dipole are longitudinal scalar wave fields.
But the scalar waves of Tesla and of my experiment show even more.
"So, maybe you should educate yourself a bit more, before questioning the education of others.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749170</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748244</id>
	<title>back to basics</title>
	<author>vacarul</author>
	<datestamp>1263376080000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>5</modscore>
	<htmltext>I'll get more energy with a hand-crank generator...</htmltext>
<tokenext>I 'll get more energy with a hand-crank generator.. .</tokentext>
<sentencetext>I'll get more energy with a hand-crank generator...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749766</id>
	<title>Re:Wireless power transmisstion is possible ...</title>
	<author>ceoyoyo</author>
	<datestamp>1263394560000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>"Suppose someone goofs and directs the beam onto a kindergarten and leaves it there for a week. What then?"</p><p>I expect someone would figure it out when people started calling in complaining that their electricity was out.</p><p>These things are generally not planned for the middle of cities either.  In order to transfer a reasonable amount of power in a low density beam you need lots of receiver area.  So you build it out in the desert.</p></htmltext>
<tokenext>" Suppose someone goofs and directs the beam onto a kindergarten and leaves it there for a week .
What then ?
" I expect someone would figure it out when people started calling in complaining that their electricity was out.These things are generally not planned for the middle of cities either .
In order to transfer a reasonable amount of power in a low density beam you need lots of receiver area .
So you build it out in the desert .</tokentext>
<sentencetext>"Suppose someone goofs and directs the beam onto a kindergarten and leaves it there for a week.
What then?
"I expect someone would figure it out when people started calling in complaining that their electricity was out.These things are generally not planned for the middle of cities either.
In order to transfer a reasonable amount of power in a low density beam you need lots of receiver area.
So you build it out in the desert.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748530</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30750556</id>
	<title>Tesla is laughing</title>
	<author>DigitalReverend</author>
	<datestamp>1263398340000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>He had this idea way back.  He's laughing because everybody thinks it's a new idea.</p></htmltext>
<tokenext>He had this idea way back .
He 's laughing because everybody thinks it 's a new idea .</tokentext>
<sentencetext>He had this idea way back.
He's laughing because everybody thinks it's a new idea.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749302</id>
	<title>You would be better off</title>
	<author>cvtan</author>
	<datestamp>1263390840000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>stealing the battery out of your friend's cell phone when he isn't looking.  Simply say, "Hey look over there! Free WiFi!" and when he is distracted, exchange  batteries.  This proves cell phones can be recharged wirelessly.</htmltext>
<tokenext>stealing the battery out of your friend 's cell phone when he is n't looking .
Simply say , " Hey look over there !
Free WiFi !
" and when he is distracted , exchange batteries .
This proves cell phones can be recharged wirelessly .</tokentext>
<sentencetext>stealing the battery out of your friend's cell phone when he isn't looking.
Simply say, "Hey look over there!
Free WiFi!
" and when he is distracted, exchange  batteries.
This proves cell phones can be recharged wirelessly.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747934</id>
	<title>Yeah, tens of meters from a 50mW power source...</title>
	<author>Anonymous</author>
	<datestamp>1263414660000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>5</modscore>
	<htmltext>Is totally gonna charge up your battery and run your cell phone for days.<br> <br>
The inverse square law and dBm being a logarithmic unit can all go to hell.</htmltext>
<tokenext>Is totally gon na charge up your battery and run your cell phone for days .
The inverse square law and dBm being a logarithmic unit can all go to hell .</tokentext>
<sentencetext>Is totally gonna charge up your battery and run your cell phone for days.
The inverse square law and dBm being a logarithmic unit can all go to hell.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30755274</id>
	<title>Re:Do **NOT** invoke Tesla</title>
	<author>Anonymous</author>
	<datestamp>1263373620000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>"The physical analogy is a steel plate placed in the bottom of an empty swimming pool with indeed grab water condensation from the air overnight and "charge" the swimming pool with water. It will NEVER fill the pool though, the self discharge (evaporation) is a faster and more robust process. " <br>
&nbsp; LoL. I'm a transport scientist and I don't even know what your talking about. What exactly is robust about evaporation? How does this feature not apply to condensation? What exactly does the steal plane have to do with anything? You do of course realize your "physical analogy" depends entirely on state variables that you did not describe and that it is easily possibly to fill by condensation than empty by evaporation? What exactly is unphysical about EM radiation?</p><p>Your analogy is ridiculous. I thought being educated would teach you not to make analogies to systems you do not understand. Not to mention your description of EM is sloppy and thus wrong. I love it when I get to correct such a condescending asshole.</p></htmltext>
<tokenext>" The physical analogy is a steel plate placed in the bottom of an empty swimming pool with indeed grab water condensation from the air overnight and " charge " the swimming pool with water .
It will NEVER fill the pool though , the self discharge ( evaporation ) is a faster and more robust process .
"   LoL .
I 'm a transport scientist and I do n't even know what your talking about .
What exactly is robust about evaporation ?
How does this feature not apply to condensation ?
What exactly does the steal plane have to do with anything ?
You do of course realize your " physical analogy " depends entirely on state variables that you did not describe and that it is easily possibly to fill by condensation than empty by evaporation ?
What exactly is unphysical about EM radiation ? Your analogy is ridiculous .
I thought being educated would teach you not to make analogies to systems you do not understand .
Not to mention your description of EM is sloppy and thus wrong .
I love it when I get to correct such a condescending asshole .</tokentext>
<sentencetext>"The physical analogy is a steel plate placed in the bottom of an empty swimming pool with indeed grab water condensation from the air overnight and "charge" the swimming pool with water.
It will NEVER fill the pool though, the self discharge (evaporation) is a faster and more robust process.
" 
  LoL.
I'm a transport scientist and I don't even know what your talking about.
What exactly is robust about evaporation?
How does this feature not apply to condensation?
What exactly does the steal plane have to do with anything?
You do of course realize your "physical analogy" depends entirely on state variables that you did not describe and that it is easily possibly to fill by condensation than empty by evaporation?
What exactly is unphysical about EM radiation?Your analogy is ridiculous.
I thought being educated would teach you not to make analogies to systems you do not understand.
Not to mention your description of EM is sloppy and thus wrong.
I love it when I get to correct such a condescending asshole.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749170</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30750128</id>
	<title>Re:Snake Oil</title>
	<author>Anonymous</author>
	<datestamp>1263396540000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>They didn't even need a directional antenna to fake the demo.  The RCA device has a battery, so you charge that before the demo and:  "Look, it's charging the blackberry with no outside wires!  Wireless power!"</p></htmltext>
<tokenext>They did n't even need a directional antenna to fake the demo .
The RCA device has a battery , so you charge that before the demo and : " Look , it 's charging the blackberry with no outside wires !
Wireless power !
"</tokentext>
<sentencetext>They didn't even need a directional antenna to fake the demo.
The RCA device has a battery, so you charge that before the demo and:  "Look, it's charging the blackberry with no outside wires!
Wireless power!
"</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748260</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30755758</id>
	<title>Re:Do **NOT** invoke Tesla</title>
	<author>techlover</author>
	<datestamp>1263375420000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>...applause. Thank you for putting all those cretins trying to use Tesla as an argument in their place!

Tesla was a genius. RCA are marketeers trying to make a fast buck.</htmltext>
<tokenext>...applause .
Thank you for putting all those cretins trying to use Tesla as an argument in their place !
Tesla was a genius .
RCA are marketeers trying to make a fast buck .</tokentext>
<sentencetext>...applause.
Thank you for putting all those cretins trying to use Tesla as an argument in their place!
Tesla was a genius.
RCA are marketeers trying to make a fast buck.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749170</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748260</id>
	<title>Snake Oil</title>
	<author>Anonymous</author>
	<datestamp>1263376380000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>3</modscore>
	<htmltext><p>Not enough energy available. Would probably not even offset self-discharging unless a pretty large antenna is used. You can fake a demo though with a highly directional antenna to beam in a wireless signal. Not realistic at all and inefficient as hell.</p><p>I am constantly amazed at what people are willing to believe.</p></htmltext>
<tokenext>Not enough energy available .
Would probably not even offset self-discharging unless a pretty large antenna is used .
You can fake a demo though with a highly directional antenna to beam in a wireless signal .
Not realistic at all and inefficient as hell.I am constantly amazed at what people are willing to believe .</tokentext>
<sentencetext>Not enough energy available.
Would probably not even offset self-discharging unless a pretty large antenna is used.
You can fake a demo though with a highly directional antenna to beam in a wireless signal.
Not realistic at all and inefficient as hell.I am constantly amazed at what people are willing to believe.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30765268</id>
	<title>Electric Car?</title>
	<author>Anonymous</author>
	<datestamp>1263488340000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>How 'bout electric cars with similar method?</p></htmltext>
<tokenext>How 'bout electric cars with similar method ?</tokentext>
<sentencetext>How 'bout electric cars with similar method?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30763384</id>
	<title>Anonymous Coward</title>
	<author>Anonymous</author>
	<datestamp>1263480960000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Its sad to see the lack of basic English skills from these Slashdot geeks.  As a geek, I am personally offended by the lack of basic English skills.  If a writer can understand one-tenth of the science discussed on Slashdot, one would think the writer would be able to grasp the difference between "then" and "than"</p></htmltext>
<tokenext>Its sad to see the lack of basic English skills from these Slashdot geeks .
As a geek , I am personally offended by the lack of basic English skills .
If a writer can understand one-tenth of the science discussed on Slashdot , one would think the writer would be able to grasp the difference between " then " and " than "</tokentext>
<sentencetext>Its sad to see the lack of basic English skills from these Slashdot geeks.
As a geek, I am personally offended by the lack of basic English skills.
If a writer can understand one-tenth of the science discussed on Slashdot, one would think the writer would be able to grasp the difference between "then" and "than"</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30750362</id>
	<title>this is great</title>
	<author>molecular</author>
	<datestamp>1263397620000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>my phone has wifi, so it can charge itself!</p></htmltext>
<tokenext>my phone has wifi , so it can charge itself !</tokentext>
<sentencetext>my phone has wifi, so it can charge itself!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748530</id>
	<title>Wireless power transmisstion is possible ...</title>
	<author>Anonymous</author>
	<datestamp>1263380280000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Wireless power transfer is possible, for example MIT researchers have shown it to work across 2 metres in 2007 (see <a href="http://web.mit.edu/newsoffice/2007/wireless-0607.html" title="mit.edu">http://web.mit.edu/newsoffice/2007/wireless-0607.html</a> [mit.edu]).
<p>
The crux is to use "Magnetically coupled resonance" to achieve efficient power transfer to prevent the vast majority of power from being broadcast into space (read wasted) when no receiver is present to absorb it. Unfortunately that very feature seems to severely limit the transmission range.
</p><p>
So I wouldn't worry about long-distance power transmission through the air just yet.
</p><p>
I'm more worried about plans for space-based power transmission which were recently green-lighted in California. For example, what happens when the beam from such satellites shifts from the intended receiver area to, say, a residential block?
</p><p>
According to <a href="http://en.wikipedia.org/wiki/Space-based\_solar\_power#cite\_note-intensity-41" title="wikipedia.org">http://en.wikipedia.org/wiki/Space-based\_solar\_power#cite\_note-intensity-41</a> [wikipedia.org] at the center of the downward beam, we would be looking at 23 mW/cm2 (and 1 mW/cm2 outside the center), compared to OSHA workplace exposure limits for microwaves, which are 10 mW/cm2. Not bad, but not good either. Suppose someone goofs and directs the beam onto a kindergarten and leaves it there for a week. What then?
</p><p>
Those 23 mW might not look like much, but it's still 230 W/m2, and it's radio-frequency which penetrates far deeper than visible light. I simply don't know how detrimental that is, but I'd like to be sure of the potential long-term effects before anything like that is built, let alone switched on. I'm certainly no Luddite, but in the light of e.g. findings like these (see <a href="http://www.isracast.com/article.aspx?id=57" title="isracast.com">http://www.isracast.com/article.aspx?id=57</a> [isracast.com]) about the detrimental effects of 2mW of 1.1GHz radiation on eye lenses I feel we ought to be careful. Signal-level transmission at 2mW is one thing, but power level transmission at 23mW/cm2 is something else.
</p></htmltext>
<tokenext>Wireless power transfer is possible , for example MIT researchers have shown it to work across 2 metres in 2007 ( see http : //web.mit.edu/newsoffice/2007/wireless-0607.html [ mit.edu ] ) .
The crux is to use " Magnetically coupled resonance " to achieve efficient power transfer to prevent the vast majority of power from being broadcast into space ( read wasted ) when no receiver is present to absorb it .
Unfortunately that very feature seems to severely limit the transmission range .
So I would n't worry about long-distance power transmission through the air just yet .
I 'm more worried about plans for space-based power transmission which were recently green-lighted in California .
For example , what happens when the beam from such satellites shifts from the intended receiver area to , say , a residential block ?
According to http : //en.wikipedia.org/wiki/Space-based \ _solar \ _power # cite \ _note-intensity-41 [ wikipedia.org ] at the center of the downward beam , we would be looking at 23 mW/cm2 ( and 1 mW/cm2 outside the center ) , compared to OSHA workplace exposure limits for microwaves , which are 10 mW/cm2 .
Not bad , but not good either .
Suppose someone goofs and directs the beam onto a kindergarten and leaves it there for a week .
What then ?
Those 23 mW might not look like much , but it 's still 230 W/m2 , and it 's radio-frequency which penetrates far deeper than visible light .
I simply do n't know how detrimental that is , but I 'd like to be sure of the potential long-term effects before anything like that is built , let alone switched on .
I 'm certainly no Luddite , but in the light of e.g .
findings like these ( see http : //www.isracast.com/article.aspx ? id = 57 [ isracast.com ] ) about the detrimental effects of 2mW of 1.1GHz radiation on eye lenses I feel we ought to be careful .
Signal-level transmission at 2mW is one thing , but power level transmission at 23mW/cm2 is something else .</tokentext>
<sentencetext>Wireless power transfer is possible, for example MIT researchers have shown it to work across 2 metres in 2007 (see http://web.mit.edu/newsoffice/2007/wireless-0607.html [mit.edu]).
The crux is to use "Magnetically coupled resonance" to achieve efficient power transfer to prevent the vast majority of power from being broadcast into space (read wasted) when no receiver is present to absorb it.
Unfortunately that very feature seems to severely limit the transmission range.
So I wouldn't worry about long-distance power transmission through the air just yet.
I'm more worried about plans for space-based power transmission which were recently green-lighted in California.
For example, what happens when the beam from such satellites shifts from the intended receiver area to, say, a residential block?
According to http://en.wikipedia.org/wiki/Space-based\_solar\_power#cite\_note-intensity-41 [wikipedia.org] at the center of the downward beam, we would be looking at 23 mW/cm2 (and 1 mW/cm2 outside the center), compared to OSHA workplace exposure limits for microwaves, which are 10 mW/cm2.
Not bad, but not good either.
Suppose someone goofs and directs the beam onto a kindergarten and leaves it there for a week.
What then?
Those 23 mW might not look like much, but it's still 230 W/m2, and it's radio-frequency which penetrates far deeper than visible light.
I simply don't know how detrimental that is, but I'd like to be sure of the potential long-term effects before anything like that is built, let alone switched on.
I'm certainly no Luddite, but in the light of e.g.
findings like these (see http://www.isracast.com/article.aspx?id=57 [isracast.com]) about the detrimental effects of 2mW of 1.1GHz radiation on eye lenses I feel we ought to be careful.
Signal-level transmission at 2mW is one thing, but power level transmission at 23mW/cm2 is something else.
</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749422</id>
	<title>Re:Wireless power transmisstion is possible ...</title>
	<author>mozzis</author>
	<datestamp>1263392160000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Dufus. If the power beam wandered off target even a little bit, it would be noticed instantly since the power would stop being delivered to the paying customers at that point. And it is much more likely that if the satelllite guidance systems failed that the beam would end up pointing into space.</htmltext>
<tokenext>Dufus .
If the power beam wandered off target even a little bit , it would be noticed instantly since the power would stop being delivered to the paying customers at that point .
And it is much more likely that if the satelllite guidance systems failed that the beam would end up pointing into space .</tokentext>
<sentencetext>Dufus.
If the power beam wandered off target even a little bit, it would be noticed instantly since the power would stop being delivered to the paying customers at that point.
And it is much more likely that if the satelllite guidance systems failed that the beam would end up pointing into space.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748530</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748864</id>
	<title>Re:back to basics</title>
	<author>Anonymous</author>
	<datestamp>1263385800000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>This is another form of crank generator: it's a generator scheme proposed by cranks.</p><p>Maybe they can get Archimedes Plutonium to participate in their ads?</p></htmltext>
<tokenext>This is another form of crank generator : it 's a generator scheme proposed by cranks.Maybe they can get Archimedes Plutonium to participate in their ads ?</tokentext>
<sentencetext>This is another form of crank generator: it's a generator scheme proposed by cranks.Maybe they can get Archimedes Plutonium to participate in their ads?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748244</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749932</id>
	<title>Other Applications</title>
	<author>Brackney</author>
	<datestamp>1263395460000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I'm less interested in the technology's ability to charge mobile devices - I agree with other posters that it seems unlikely to work in a reasonable time frame.  I do think it could have potential for powering wireless sensor networks though.  Some of these devices require relatively little power, but the present need for batteries (and replacing them) is a show stopper for realistic deployment.</p></htmltext>
<tokenext>I 'm less interested in the technology 's ability to charge mobile devices - I agree with other posters that it seems unlikely to work in a reasonable time frame .
I do think it could have potential for powering wireless sensor networks though .
Some of these devices require relatively little power , but the present need for batteries ( and replacing them ) is a show stopper for realistic deployment .</tokentext>
<sentencetext>I'm less interested in the technology's ability to charge mobile devices - I agree with other posters that it seems unlikely to work in a reasonable time frame.
I do think it could have potential for powering wireless sensor networks though.
Some of these devices require relatively little power, but the present need for batteries (and replacing them) is a show stopper for realistic deployment.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748718</id>
	<title>Really cool. If I combine some of these boxes..</title>
	<author>Anonymous</author>
	<datestamp>1263383220000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>maybe I can run my 3g wireless access point on them?<br>If I place them close enough I might not even need any other wifi signals..</p></htmltext>
<tokenext>maybe I can run my 3g wireless access point on them ? If I place them close enough I might not even need any other wifi signals. .</tokentext>
<sentencetext>maybe I can run my 3g wireless access point on them?If I place them close enough I might not even need any other wifi signals..</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748886</id>
	<title>I have a much better idea</title>
	<author>jbb999</author>
	<datestamp>1263386100000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Instead of using wifi why don't they grab the power from mobile phone transmissions and use the power transmitted from the mobile phone instead. They can build the device right next to the phone then so they can get *much* more power. In fact the inverse square law states that the closer you get to the source the power increases. If you are building this into a phone then you can put the device right inside the transmitter and be at ZERO distance and so the inverse square law tells me that would generate an INFINITE amount of power! That should be enough to power a cellphone, right?<nobr> <wbr></nobr>/not serious...</htmltext>
<tokenext>Instead of using wifi why do n't they grab the power from mobile phone transmissions and use the power transmitted from the mobile phone instead .
They can build the device right next to the phone then so they can get * much * more power .
In fact the inverse square law states that the closer you get to the source the power increases .
If you are building this into a phone then you can put the device right inside the transmitter and be at ZERO distance and so the inverse square law tells me that would generate an INFINITE amount of power !
That should be enough to power a cellphone , right ?
/not serious.. .</tokentext>
<sentencetext>Instead of using wifi why don't they grab the power from mobile phone transmissions and use the power transmitted from the mobile phone instead.
They can build the device right next to the phone then so they can get *much* more power.
In fact the inverse square law states that the closer you get to the source the power increases.
If you are building this into a phone then you can put the device right inside the transmitter and be at ZERO distance and so the inverse square law tells me that would generate an INFINITE amount of power!
That should be enough to power a cellphone, right?
/not serious...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749772</id>
	<title>Re:Nokia's working on this too</title>
	<author>natehoy</author>
	<datestamp>1263394620000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>My WiFi access point (WRT54GL) is running aftermarket firmware that allows me to specify the transmit power on my unit in mW.  The standard "100\%" reads as 42mW.  The Broadcomm radio is capable of cranking up to about 250mW without external cooling, and could go as high as 1 watt if I put some serious cooling into it.  I don't know what FCC regs I'd be busting doing that, but anyway...</p><p>Most public access points are going to run the standard signal strength, so your average radio will be cranking out under 50mW.  Assuming you have a large antenna placed right next to this thing (which means you're blocking/absorbing signal in that direction almost entirely), you might be able to harvest about 30\% of that signal, and given the losses involved in even the smallest of distances you'll probably yield about half that.  So, at best, you'll get about 7mW, and you'll have a VERY angry WiFi operator.</p><p>My Blackberry's stock charger puts out 5V at 700mA, which if I understand my electric conversions properly is somewhere around 3.5 watts.  Or 3,500mW if we want to stick to a consistent unit of measure.  And it takes two hours to charge my BB from 0\% to 100\%, which gives me about 2 days of "average" operation (an hour or two a day of running the GPS, an hour or two of talk time, and a little web surfing).</p><p>To put that in perspective, my stock Blackberry charger puts out 500 times the amount of power that a WiFi collector could collect in its wildest dreams in an unrealistic scenario.  So if my charger takes 2 hours, that would mean a WiFi would take somewhere significantly north of 1000 hours to do a full charge, and even that's a mad fantasy.  That's about a month and a half.</p><p>Even if they managed to get 50mW of collection, which has gone from the realm of fantasy to that of engineering wet dreams, it would take 140 hours to charge a phone that discharges in 48 hours at best.  And a lot of that discharge is the cell radio, which you need to have on to receive calls.  If they managed that kind of collection, they could market it as an "occasional use emergency" phone, but it would cost a fortune.  Giving someone an old handset with a car charger would be a far better emergency phone.</p></htmltext>
<tokenext>My WiFi access point ( WRT54GL ) is running aftermarket firmware that allows me to specify the transmit power on my unit in mW .
The standard " 100 \ % " reads as 42mW .
The Broadcomm radio is capable of cranking up to about 250mW without external cooling , and could go as high as 1 watt if I put some serious cooling into it .
I do n't know what FCC regs I 'd be busting doing that , but anyway...Most public access points are going to run the standard signal strength , so your average radio will be cranking out under 50mW .
Assuming you have a large antenna placed right next to this thing ( which means you 're blocking/absorbing signal in that direction almost entirely ) , you might be able to harvest about 30 \ % of that signal , and given the losses involved in even the smallest of distances you 'll probably yield about half that .
So , at best , you 'll get about 7mW , and you 'll have a VERY angry WiFi operator.My Blackberry 's stock charger puts out 5V at 700mA , which if I understand my electric conversions properly is somewhere around 3.5 watts .
Or 3,500mW if we want to stick to a consistent unit of measure .
And it takes two hours to charge my BB from 0 \ % to 100 \ % , which gives me about 2 days of " average " operation ( an hour or two a day of running the GPS , an hour or two of talk time , and a little web surfing ) .To put that in perspective , my stock Blackberry charger puts out 500 times the amount of power that a WiFi collector could collect in its wildest dreams in an unrealistic scenario .
So if my charger takes 2 hours , that would mean a WiFi would take somewhere significantly north of 1000 hours to do a full charge , and even that 's a mad fantasy .
That 's about a month and a half.Even if they managed to get 50mW of collection , which has gone from the realm of fantasy to that of engineering wet dreams , it would take 140 hours to charge a phone that discharges in 48 hours at best .
And a lot of that discharge is the cell radio , which you need to have on to receive calls .
If they managed that kind of collection , they could market it as an " occasional use emergency " phone , but it would cost a fortune .
Giving someone an old handset with a car charger would be a far better emergency phone .</tokentext>
<sentencetext>My WiFi access point (WRT54GL) is running aftermarket firmware that allows me to specify the transmit power on my unit in mW.
The standard "100\%" reads as 42mW.
The Broadcomm radio is capable of cranking up to about 250mW without external cooling, and could go as high as 1 watt if I put some serious cooling into it.
I don't know what FCC regs I'd be busting doing that, but anyway...Most public access points are going to run the standard signal strength, so your average radio will be cranking out under 50mW.
Assuming you have a large antenna placed right next to this thing (which means you're blocking/absorbing signal in that direction almost entirely), you might be able to harvest about 30\% of that signal, and given the losses involved in even the smallest of distances you'll probably yield about half that.
So, at best, you'll get about 7mW, and you'll have a VERY angry WiFi operator.My Blackberry's stock charger puts out 5V at 700mA, which if I understand my electric conversions properly is somewhere around 3.5 watts.
Or 3,500mW if we want to stick to a consistent unit of measure.
And it takes two hours to charge my BB from 0\% to 100\%, which gives me about 2 days of "average" operation (an hour or two a day of running the GPS, an hour or two of talk time, and a little web surfing).To put that in perspective, my stock Blackberry charger puts out 500 times the amount of power that a WiFi collector could collect in its wildest dreams in an unrealistic scenario.
So if my charger takes 2 hours, that would mean a WiFi would take somewhere significantly north of 1000 hours to do a full charge, and even that's a mad fantasy.
That's about a month and a half.Even if they managed to get 50mW of collection, which has gone from the realm of fantasy to that of engineering wet dreams, it would take 140 hours to charge a phone that discharges in 48 hours at best.
And a lot of that discharge is the cell radio, which you need to have on to receive calls.
If they managed that kind of collection, they could market it as an "occasional use emergency" phone, but it would cost a fortune.
Giving someone an old handset with a car charger would be a far better emergency phone.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748404</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749020</id>
	<title>Re:back to basics</title>
	<author>east coast</author>
	<datestamp>1263387660000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I think the question is if you carry one with you.<br> <br>If this technology worked properly instead of most people here assuming that it doesn't it would be huge. The idea of having a few wireless units plugged into home outlets like a Glade air freshener and never having to deal with this charger for this unit and another for another unit and tracking down yet another charge for a unit that only needs charged once a month would get a lot of play.</htmltext>
<tokenext>I think the question is if you carry one with you .
If this technology worked properly instead of most people here assuming that it does n't it would be huge .
The idea of having a few wireless units plugged into home outlets like a Glade air freshener and never having to deal with this charger for this unit and another for another unit and tracking down yet another charge for a unit that only needs charged once a month would get a lot of play .</tokentext>
<sentencetext>I think the question is if you carry one with you.
If this technology worked properly instead of most people here assuming that it doesn't it would be huge.
The idea of having a few wireless units plugged into home outlets like a Glade air freshener and never having to deal with this charger for this unit and another for another unit and tracking down yet another charge for a unit that only needs charged once a month would get a lot of play.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748244</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748344</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>gweihir</author>
	<datestamp>1263377700000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><em>A coil of wire with a current running through it emits a magnetic force. From memory, a magnetic force applied to a coil generates a current. Seeing as the earth is covered in a huge magnetic shell, how come people don't actually generate power this way? Is the magnetic field simply too weak compared to what is needed to generate a current of any value?</em></p><p><em>Perhaps one of you smart folk here might help me out with this little "backburner" thought that I have had for a while?</em></p><p>You have something wrong here: Only a changing magnetic force induces a current, a constant one does not. (Well, technically it does, but at zero Volt, so no current flows.)</p></htmltext>
<tokenext>A coil of wire with a current running through it emits a magnetic force .
From memory , a magnetic force applied to a coil generates a current .
Seeing as the earth is covered in a huge magnetic shell , how come people do n't actually generate power this way ?
Is the magnetic field simply too weak compared to what is needed to generate a current of any value ? Perhaps one of you smart folk here might help me out with this little " backburner " thought that I have had for a while ? You have something wrong here : Only a changing magnetic force induces a current , a constant one does not .
( Well , technically it does , but at zero Volt , so no current flows .
)</tokentext>
<sentencetext>A coil of wire with a current running through it emits a magnetic force.
From memory, a magnetic force applied to a coil generates a current.
Seeing as the earth is covered in a huge magnetic shell, how come people don't actually generate power this way?
Is the magnetic field simply too weak compared to what is needed to generate a current of any value?Perhaps one of you smart folk here might help me out with this little "backburner" thought that I have had for a while?You have something wrong here: Only a changing magnetic force induces a current, a constant one does not.
(Well, technically it does, but at zero Volt, so no current flows.
)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30753762</id>
	<title>Makes one wonder about the REA dangers of this ...</title>
	<author>freaker\_TuC</author>
	<datestamp>1263410880000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I've been thinking a lot lately about the dangers of EM radiation around us.<br>If this is true, energy can be created from those signals in the sky ; one might wonder which effect this has on the human body, DNA and the brains.</p><p>Daily signals get added with watts/megawatts of power behind it. It's already proven DECT could create <a href="http://www.emfacts.com/papers/dect.pd" title="emfacts.com">medical</a> [emfacts.com] <a href="http://www.tetrawatch.net/science/dect.php" title="tetrawatch.net">problems</a> [tetrawatch.net].</p><p>So, how safe are we really inbetween this vast space of electromagnetic radiation? And how does this affect our lives with all those signals combined bouncing off and through our bodies by the second, mostly for commercial gain?</p></htmltext>
<tokenext>I 've been thinking a lot lately about the dangers of EM radiation around us.If this is true , energy can be created from those signals in the sky ; one might wonder which effect this has on the human body , DNA and the brains.Daily signals get added with watts/megawatts of power behind it .
It 's already proven DECT could create medical [ emfacts.com ] problems [ tetrawatch.net ] .So , how safe are we really inbetween this vast space of electromagnetic radiation ?
And how does this affect our lives with all those signals combined bouncing off and through our bodies by the second , mostly for commercial gain ?</tokentext>
<sentencetext>I've been thinking a lot lately about the dangers of EM radiation around us.If this is true, energy can be created from those signals in the sky ; one might wonder which effect this has on the human body, DNA and the brains.Daily signals get added with watts/megawatts of power behind it.
It's already proven DECT could create medical [emfacts.com] problems [tetrawatch.net].So, how safe are we really inbetween this vast space of electromagnetic radiation?
And how does this affect our lives with all those signals combined bouncing off and through our bodies by the second, mostly for commercial gain?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748334</id>
	<title>There ain't no RCA</title>
	<author>Wansu</author>
	<datestamp>1263377520000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext><p>
&nbsp; <i>Plus, don't let the RCA brand fool you into thinking this must be from a legitimate company: RCA hasn't existed as anything more then a licensed brand name for a couple of decades.</i> </p><p>You got that right. Neutron Jack cannibalized RCA in the late 80s, selling the consumer electronics division to Thompson. About 12 years ago, they sold chinese company TCL the right to use the RCA name on TVs and other products.</p><p>They ought to replace Nipper with one of those chinese hounds with all the extra folds of skin. HIs master's voice is in chinese.</p></htmltext>
<tokenext>  Plus , do n't let the RCA brand fool you into thinking this must be from a legitimate company : RCA has n't existed as anything more then a licensed brand name for a couple of decades .
You got that right .
Neutron Jack cannibalized RCA in the late 80s , selling the consumer electronics division to Thompson .
About 12 years ago , they sold chinese company TCL the right to use the RCA name on TVs and other products.They ought to replace Nipper with one of those chinese hounds with all the extra folds of skin .
HIs master 's voice is in chinese .</tokentext>
<sentencetext>
  Plus, don't let the RCA brand fool you into thinking this must be from a legitimate company: RCA hasn't existed as anything more then a licensed brand name for a couple of decades.
You got that right.
Neutron Jack cannibalized RCA in the late 80s, selling the consumer electronics division to Thompson.
About 12 years ago, they sold chinese company TCL the right to use the RCA name on TVs and other products.They ought to replace Nipper with one of those chinese hounds with all the extra folds of skin.
HIs master's voice is in chinese.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749678</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>Anonymous</author>
	<datestamp>1263393960000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>What's so special about buying a phone without a contract?</p></htmltext>
<tokenext>What 's so special about buying a phone without a contract ?</tokentext>
<sentencetext>What's so special about buying a phone without a contract?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748280</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30751210</id>
	<title>Re:Snake Oil</title>
	<author>Anonymous</author>
	<datestamp>1263400980000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>Not enough energy available. Would probably not even offset self-discharging unless a pretty large antenna is used...</p></div><p>If it could offset self-discharge, that would be a nice feature for a portable battery pack.</p></div>
	</htmltext>
<tokenext>Not enough energy available .
Would probably not even offset self-discharging unless a pretty large antenna is used...If it could offset self-discharge , that would be a nice feature for a portable battery pack .</tokentext>
<sentencetext>Not enough energy available.
Would probably not even offset self-discharging unless a pretty large antenna is used...If it could offset self-discharge, that would be a nice feature for a portable battery pack.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748260</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30756968</id>
	<title>Re:Do **NOT** invoke Tesla</title>
	<author>NeutronCowboy</author>
	<datestamp>1263380580000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I don't think that that pdf qualifies as education. Number 1, no math. Whatsoever. Which makes it hard to explain how the magnetic coupling between the transmitter and receiver stays above noise for a distance of 30 miles. The numbers that do get mentioned are mere statements, including such gems as "The scalar wave according to that goes with (7/4.7=) 1.5 times the speed of light!" He arrives at that by confusing frequency and wave propagation.</p><p>That paper is pure and utter crap - on par with the Timecube. Tesla might have been right, but that paper isn't the reason why.</p></htmltext>
<tokenext>I do n't think that that pdf qualifies as education .
Number 1 , no math .
Whatsoever. Which makes it hard to explain how the magnetic coupling between the transmitter and receiver stays above noise for a distance of 30 miles .
The numbers that do get mentioned are mere statements , including such gems as " The scalar wave according to that goes with ( 7/4.7 = ) 1.5 times the speed of light !
" He arrives at that by confusing frequency and wave propagation.That paper is pure and utter crap - on par with the Timecube .
Tesla might have been right , but that paper is n't the reason why .</tokentext>
<sentencetext>I don't think that that pdf qualifies as education.
Number 1, no math.
Whatsoever. Which makes it hard to explain how the magnetic coupling between the transmitter and receiver stays above noise for a distance of 30 miles.
The numbers that do get mentioned are mere statements, including such gems as "The scalar wave according to that goes with (7/4.7=) 1.5 times the speed of light!
" He arrives at that by confusing frequency and wave propagation.That paper is pure and utter crap - on par with the Timecube.
Tesla might have been right, but that paper isn't the reason why.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749938</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30755962</id>
	<title>Re:Nokia's working on this too</title>
	<author>techlover</author>
	<datestamp>1263376140000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>What you have to understand from that is that firstly: their current prototype can harvest about 3 - 5mW under optimal conditions so even if it sat collecting energy for a whole year then it would only be able to collect less than $0.01 of electricity. Secondly a smartphone such as a Blackberry uses at least 50x that amount of energy with moderate use. SO as a standalone device it will never EVER pay for itself either in money saved or energy saved. As an integrated device in a handset it has slightly more promise if in the future it is able to collect 20 - 40mW and device power consumption has been reduced significantly. Even so it will still only ever be good for topping up devices...</htmltext>
<tokenext>What you have to understand from that is that firstly : their current prototype can harvest about 3 - 5mW under optimal conditions so even if it sat collecting energy for a whole year then it would only be able to collect less than $ 0.01 of electricity .
Secondly a smartphone such as a Blackberry uses at least 50x that amount of energy with moderate use .
SO as a standalone device it will never EVER pay for itself either in money saved or energy saved .
As an integrated device in a handset it has slightly more promise if in the future it is able to collect 20 - 40mW and device power consumption has been reduced significantly .
Even so it will still only ever be good for topping up devices.. .</tokentext>
<sentencetext>What you have to understand from that is that firstly: their current prototype can harvest about 3 - 5mW under optimal conditions so even if it sat collecting energy for a whole year then it would only be able to collect less than $0.01 of electricity.
Secondly a smartphone such as a Blackberry uses at least 50x that amount of energy with moderate use.
SO as a standalone device it will never EVER pay for itself either in money saved or energy saved.
As an integrated device in a handset it has slightly more promise if in the future it is able to collect 20 - 40mW and device power consumption has been reduced significantly.
Even so it will still only ever be good for topping up devices...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748404</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30904122</id>
	<title>Re:back to basics</title>
	<author>Guysmiley777</author>
	<datestamp>1264520640000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>It could be a full frontal Bea Arthur sucking off Rush Limbaugh and it'd still be more energy than this quackery.</p></htmltext>
<tokenext>It could be a full frontal Bea Arthur sucking off Rush Limbaugh and it 'd still be more energy than this quackery .</tokentext>
<sentencetext>It could be a full frontal Bea Arthur sucking off Rush Limbaugh and it'd still be more energy than this quackery.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748696</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748280</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>Anonymous</author>
	<datestamp>1263376560000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I see your point, and you are dead on - today!</p><p>I remember an episode of Star Trek where the Captain and Spock admire a source of lighting that "produces light, but no heat! - How advanced!" yet, compared to incandescent bulbs, that's an apt description of LED lights, especially those <a href="http://en.wikipedia.org/wiki/Light-emitting\_diode" title="wikipedia.org">designed for high efficiency</a> [wikipedia.org]!</p><p>Let's talk now about Cell Phones - I almost bought a cheapie cell phone for $29 that was about the depth/width/length of a hershey chocolate bar. It sported 2 days of battery life, unlimited text/picture messaging, and (get this!) NO CONTRACT. Compared to the "brick" 1980s cell phone, we have at LEAST an order of magnitude reduction in power consumption and possibly two, by using such techniques and digital packet switching, variable power output, and the like. And <a href="http://mobile.slashdot.org/story/10/01/12/1628216/Bell-Labs-Says-Networks-Can-Be-1000-Times-More-Energy-Efficient" title="slashdot.org">this trend is set to continue into the indefinite future</a> [slashdot.org] - we are *still* spending far too much in resources to get what we want.</p><p>Now, if you figure that we can improve power conductivity by, oh say, 50\%, and can cut power utilization by 100x, (1/10th the amount claimed by Bell Labs) then suddenly, the charge rates from a 150 mw 802.11 radio source 5 meters away actually seems reasonable!</p><p>It won't happen today, or tomorrow. But in a few years? Not only possible, but likely!</p></htmltext>
<tokenext>I see your point , and you are dead on - today ! I remember an episode of Star Trek where the Captain and Spock admire a source of lighting that " produces light , but no heat !
- How advanced !
" yet , compared to incandescent bulbs , that 's an apt description of LED lights , especially those designed for high efficiency [ wikipedia.org ] ! Let 's talk now about Cell Phones - I almost bought a cheapie cell phone for $ 29 that was about the depth/width/length of a hershey chocolate bar .
It sported 2 days of battery life , unlimited text/picture messaging , and ( get this !
) NO CONTRACT .
Compared to the " brick " 1980s cell phone , we have at LEAST an order of magnitude reduction in power consumption and possibly two , by using such techniques and digital packet switching , variable power output , and the like .
And this trend is set to continue into the indefinite future [ slashdot.org ] - we are * still * spending far too much in resources to get what we want.Now , if you figure that we can improve power conductivity by , oh say , 50 \ % , and can cut power utilization by 100x , ( 1/10th the amount claimed by Bell Labs ) then suddenly , the charge rates from a 150 mw 802.11 radio source 5 meters away actually seems reasonable ! It wo n't happen today , or tomorrow .
But in a few years ?
Not only possible , but likely !</tokentext>
<sentencetext>I see your point, and you are dead on - today!I remember an episode of Star Trek where the Captain and Spock admire a source of lighting that "produces light, but no heat!
- How advanced!
" yet, compared to incandescent bulbs, that's an apt description of LED lights, especially those designed for high efficiency [wikipedia.org]!Let's talk now about Cell Phones - I almost bought a cheapie cell phone for $29 that was about the depth/width/length of a hershey chocolate bar.
It sported 2 days of battery life, unlimited text/picture messaging, and (get this!
) NO CONTRACT.
Compared to the "brick" 1980s cell phone, we have at LEAST an order of magnitude reduction in power consumption and possibly two, by using such techniques and digital packet switching, variable power output, and the like.
And this trend is set to continue into the indefinite future [slashdot.org] - we are *still* spending far too much in resources to get what we want.Now, if you figure that we can improve power conductivity by, oh say, 50\%, and can cut power utilization by 100x, (1/10th the amount claimed by Bell Labs) then suddenly, the charge rates from a 150 mw 802.11 radio source 5 meters away actually seems reasonable!It won't happen today, or tomorrow.
But in a few years?
Not only possible, but likely!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747934</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30751974</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>jandrese</author>
	<datestamp>1263404100000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>How does this not sap energy from your orbit?  Is it basically a roundabout way of converting reaction mass into electricity?</htmltext>
<tokenext>How does this not sap energy from your orbit ?
Is it basically a roundabout way of converting reaction mass into electricity ?</tokentext>
<sentencetext>How does this not sap energy from your orbit?
Is it basically a roundabout way of converting reaction mass into electricity?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748112</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749514</id>
	<title>Re:Snake Oil</title>
	<author>natehoy</author>
	<datestamp>1263392820000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext><p>They didn't even need to do that for this demo.  They "pre-charged" it using WiFi, with no indication of how long it took to charge.  They probably had to have the prototype built back in June or July and set it right next to a dedicated access point dialed up to "11" since then to get enough charge to top a Blackberry from 30\% to 100\%.</p><p>If they're really lucky, they'll have the SAME device recharged for CES next year and it can charge a Blackberry from 0\% to 100\%.  They'll have to have 4-5 more access points dedicated to charging it, of course, for the entire year.</p><p>Kind of expensive for a device that can pull maybe $1 worth of electricity each YEAR.  It's got an 40-year ROI, and it'll probably last about 3.</p></htmltext>
<tokenext>They did n't even need to do that for this demo .
They " pre-charged " it using WiFi , with no indication of how long it took to charge .
They probably had to have the prototype built back in June or July and set it right next to a dedicated access point dialed up to " 11 " since then to get enough charge to top a Blackberry from 30 \ % to 100 \ % .If they 're really lucky , they 'll have the SAME device recharged for CES next year and it can charge a Blackberry from 0 \ % to 100 \ % .
They 'll have to have 4-5 more access points dedicated to charging it , of course , for the entire year.Kind of expensive for a device that can pull maybe $ 1 worth of electricity each YEAR .
It 's got an 40-year ROI , and it 'll probably last about 3 .</tokentext>
<sentencetext>They didn't even need to do that for this demo.
They "pre-charged" it using WiFi, with no indication of how long it took to charge.
They probably had to have the prototype built back in June or July and set it right next to a dedicated access point dialed up to "11" since then to get enough charge to top a Blackberry from 30\% to 100\%.If they're really lucky, they'll have the SAME device recharged for CES next year and it can charge a Blackberry from 0\% to 100\%.
They'll have to have 4-5 more access points dedicated to charging it, of course, for the entire year.Kind of expensive for a device that can pull maybe $1 worth of electricity each YEAR.
It's got an 40-year ROI, and it'll probably last about 3.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748260</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748548</id>
	<title>Re:Nokia's working on this too</title>
	<author>Anonymous</author>
	<datestamp>1263380460000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>My Nokia E66 uses 1W idling according to their application. I don't see a possible benefit in this.</p></htmltext>
<tokenext>My Nokia E66 uses 1W idling according to their application .
I do n't see a possible benefit in this .</tokentext>
<sentencetext>My Nokia E66 uses 1W idling according to their application.
I don't see a possible benefit in this.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748404</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748576</id>
	<title>Re:Snake Oil</title>
	<author>Spatial</author>
	<datestamp>1263380820000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext><p><div class="quote"><p>I am constantly amazed at what people are willing to believe.</p></div><p>Ignorance makes you gullible.  And in general people are pretty ignorant about technology.</p></div>
	</htmltext>
<tokenext>I am constantly amazed at what people are willing to believe.Ignorance makes you gullible .
And in general people are pretty ignorant about technology .</tokentext>
<sentencetext>I am constantly amazed at what people are willing to believe.Ignorance makes you gullible.
And in general people are pretty ignorant about technology.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748260</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30754634</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>makomk</author>
	<datestamp>1263414240000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>LED lighting <i>only</i> produces light with no heat in comparison to incandescent. High-power LEDs actually have fairly impressive cooling requirements if you don't want them to cook themselves to death from the heat produced.</p></htmltext>
<tokenext>LED lighting only produces light with no heat in comparison to incandescent .
High-power LEDs actually have fairly impressive cooling requirements if you do n't want them to cook themselves to death from the heat produced .</tokentext>
<sentencetext>LED lighting only produces light with no heat in comparison to incandescent.
High-power LEDs actually have fairly impressive cooling requirements if you don't want them to cook themselves to death from the heat produced.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748280</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30774890</id>
	<title>Forget about arguing the technology...</title>
	<author>duffbeer703</author>
	<datestamp>1263486360000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Nobody here knows WTF they are talking about, so let's take this from another approach.</p><p>Scenario: You develop a miracle product which can suck electricity out of thin air. It's a killer app and you'll sell millions of them. So you start your company, get the product manufactured in China and get ready to sell it. After doing all of this, you for some reason license the trademark of the long-defunct Radio Corporation of America -- a trademark you don't control and is mostly used to sell universal remote controls and cheap stereo cable.</p><p>Why would you do that? Why build a brand that nobody remembers and that you don't own? It makes no sense.</p></htmltext>
<tokenext>Nobody here knows WTF they are talking about , so let 's take this from another approach.Scenario : You develop a miracle product which can suck electricity out of thin air .
It 's a killer app and you 'll sell millions of them .
So you start your company , get the product manufactured in China and get ready to sell it .
After doing all of this , you for some reason license the trademark of the long-defunct Radio Corporation of America -- a trademark you do n't control and is mostly used to sell universal remote controls and cheap stereo cable.Why would you do that ?
Why build a brand that nobody remembers and that you do n't own ?
It makes no sense .</tokentext>
<sentencetext>Nobody here knows WTF they are talking about, so let's take this from another approach.Scenario: You develop a miracle product which can suck electricity out of thin air.
It's a killer app and you'll sell millions of them.
So you start your company, get the product manufactured in China and get ready to sell it.
After doing all of this, you for some reason license the trademark of the long-defunct Radio Corporation of America -- a trademark you don't control and is mostly used to sell universal remote controls and cheap stereo cable.Why would you do that?
Why build a brand that nobody remembers and that you don't own?
It makes no sense.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748140</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>Anonymous</author>
	<datestamp>1263374340000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>5</modscore>
	<htmltext><p>A *changing* magnetic field generates a current. If you just take a coil with some wires attached, and hook up a voltmeter, nothing will happen. Only when you start moving your coil through a magnetic field will you start to see volts. (Earth's field is extremely weak, but with a big coil and a sensitive meter you could see a small current.)</p><p>The reason this can't be used for infinite power generation is that the coil will resist movement. Any flow of current generates a magnetic field of its own, and if you do the math, it turns out that the induced current in your coil creates a field in opposition to the field it's moving through. It works against you like a kind of friction, or like air resistance. If you just give the coil an initial kick, it will quickly run down to a stop. In order to generate power you have to keep putting energy into the system.</p><p>In other words, you're not draining energy from the magnetic field, you're just converting the kinetic energy you put in.</p><p>This is in fact how generators work. A big conductive coil is spun around inside the field of some permanent magnets. If your generator is connected to a water turbine, you're converting the kinetic energy in falling water into the kinetic energy of a spinning coil and thence to electrical energy in a wire.</p></htmltext>
<tokenext>A * changing * magnetic field generates a current .
If you just take a coil with some wires attached , and hook up a voltmeter , nothing will happen .
Only when you start moving your coil through a magnetic field will you start to see volts .
( Earth 's field is extremely weak , but with a big coil and a sensitive meter you could see a small current .
) The reason this ca n't be used for infinite power generation is that the coil will resist movement .
Any flow of current generates a magnetic field of its own , and if you do the math , it turns out that the induced current in your coil creates a field in opposition to the field it 's moving through .
It works against you like a kind of friction , or like air resistance .
If you just give the coil an initial kick , it will quickly run down to a stop .
In order to generate power you have to keep putting energy into the system.In other words , you 're not draining energy from the magnetic field , you 're just converting the kinetic energy you put in.This is in fact how generators work .
A big conductive coil is spun around inside the field of some permanent magnets .
If your generator is connected to a water turbine , you 're converting the kinetic energy in falling water into the kinetic energy of a spinning coil and thence to electrical energy in a wire .</tokentext>
<sentencetext>A *changing* magnetic field generates a current.
If you just take a coil with some wires attached, and hook up a voltmeter, nothing will happen.
Only when you start moving your coil through a magnetic field will you start to see volts.
(Earth's field is extremely weak, but with a big coil and a sensitive meter you could see a small current.
)The reason this can't be used for infinite power generation is that the coil will resist movement.
Any flow of current generates a magnetic field of its own, and if you do the math, it turns out that the induced current in your coil creates a field in opposition to the field it's moving through.
It works against you like a kind of friction, or like air resistance.
If you just give the coil an initial kick, it will quickly run down to a stop.
In order to generate power you have to keep putting energy into the system.In other words, you're not draining energy from the magnetic field, you're just converting the kinetic energy you put in.This is in fact how generators work.
A big conductive coil is spun around inside the field of some permanent magnets.
If your generator is connected to a water turbine, you're converting the kinetic energy in falling water into the kinetic energy of a spinning coil and thence to electrical energy in a wire.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748538</id>
	<title>re:</title>
	<author>vodomecs</author>
	<datestamp>1263380340000</datestamp>
	<modclass>Troll</modclass>
	<modscore>0</modscore>
	<htmltext>That sounds cool. It might actually work!</htmltext>
<tokenext>That sounds cool .
It might actually work !</tokentext>
<sentencetext>That sounds cool.
It might actually work!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30750586</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>mcgrew</author>
	<datestamp>1263398460000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>As some others have said, either the coil or the magnet have to be moving. Interestingly, though, my now-retired father used to construct high voltage transmission towers. He says that before the transmission line was finished, before any power was applied, he could (and would) wrap a coil of wire around the cable and weld his initials into the tower.</p><p>He couldn't figure out how that could work, but it seemed simple to me. The swaying of the cables in the wind generated current by interacting with the earth's magnetic field.</p></htmltext>
<tokenext>As some others have said , either the coil or the magnet have to be moving .
Interestingly , though , my now-retired father used to construct high voltage transmission towers .
He says that before the transmission line was finished , before any power was applied , he could ( and would ) wrap a coil of wire around the cable and weld his initials into the tower.He could n't figure out how that could work , but it seemed simple to me .
The swaying of the cables in the wind generated current by interacting with the earth 's magnetic field .</tokentext>
<sentencetext>As some others have said, either the coil or the magnet have to be moving.
Interestingly, though, my now-retired father used to construct high voltage transmission towers.
He says that before the transmission line was finished, before any power was applied, he could (and would) wrap a coil of wire around the cable and weld his initials into the tower.He couldn't figure out how that could work, but it seemed simple to me.
The swaying of the cables in the wind generated current by interacting with the earth's magnetic field.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748112</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>KulSeran</author>
	<datestamp>1263373980000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>5</modscore>
	<htmltext><p>Nasa HAS tried this.<br><a href="http://en.wikipedia.org/wiki/Electrodynamic\_tether" title="wikipedia.org" rel="nofollow">http://en.wikipedia.org/wiki/Electrodynamic\_tether</a> [wikipedia.org]<br>You can generate electricity as you move around the earth. Being in orbit, you are going fast enough to make worthwhile magnetic flux, and you are free of air resistance that would keep you from deploying the tether if you were lower in the atmosphere.</p></htmltext>
<tokenext>Nasa HAS tried this.http : //en.wikipedia.org/wiki/Electrodynamic \ _tether [ wikipedia.org ] You can generate electricity as you move around the earth .
Being in orbit , you are going fast enough to make worthwhile magnetic flux , and you are free of air resistance that would keep you from deploying the tether if you were lower in the atmosphere .</tokentext>
<sentencetext>Nasa HAS tried this.http://en.wikipedia.org/wiki/Electrodynamic\_tether [wikipedia.org]You can generate electricity as you move around the earth.
Being in orbit, you are going fast enough to make worthwhile magnetic flux, and you are free of air resistance that would keep you from deploying the tether if you were lower in the atmosphere.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749652</id>
	<title>Re:back to basics</title>
	<author>necro81</author>
	<datestamp>1263393780000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>At my college there was a large engineering design course as part of the graduation requirements.  The individual projects that teams of 1-4 students took on were solicited from and sponsored by actual companies.<br> <br>

One project the year I took this course sought to develop a way to harness the power of people typing.  The company sponsoring the project wanted to patent the hell out of the technology and use it to run a laptop computer indefinitely.  That was all well and good until someone spent five minutes doing back-of-the-envelope calculations and realized that, even with 100\% harnessing and conversion efficiency, you'd be luck to harness one watt of power - and that was with someone typing 75 words per minute.  This might have been enough to power a bluetooth keyboard, but definitely not even the most power-efficient laptop in the world.<br> <br>

So after that little debacle, the project team launched an entirely new avenue: a handcrank generator that would attach to a standard-issue <a href="http://t1.gstatic.com/images?q=tbn:4zk9QQpPw0cWcM\%3Ahttp://www.nexternal.com/armynavy/images/flashlight11.gif" title="gstatic.com">military flashlight</a> [gstatic.com].  The idea was to use the flashlight as part of the crank, being already there, fairly rugged, and with a right-angle bend in it.  With next to no design effort, their first prototype could be cranked to produce about 30 W of electricity for a decent amount of time, depending on who was cranking it.<br> <br>

This worked well enough as a design project, and the team's final design was fairly impressive.  But as a possible product it was dead-on-arrival.</htmltext>
<tokenext>At my college there was a large engineering design course as part of the graduation requirements .
The individual projects that teams of 1-4 students took on were solicited from and sponsored by actual companies .
One project the year I took this course sought to develop a way to harness the power of people typing .
The company sponsoring the project wanted to patent the hell out of the technology and use it to run a laptop computer indefinitely .
That was all well and good until someone spent five minutes doing back-of-the-envelope calculations and realized that , even with 100 \ % harnessing and conversion efficiency , you 'd be luck to harness one watt of power - and that was with someone typing 75 words per minute .
This might have been enough to power a bluetooth keyboard , but definitely not even the most power-efficient laptop in the world .
So after that little debacle , the project team launched an entirely new avenue : a handcrank generator that would attach to a standard-issue military flashlight [ gstatic.com ] .
The idea was to use the flashlight as part of the crank , being already there , fairly rugged , and with a right-angle bend in it .
With next to no design effort , their first prototype could be cranked to produce about 30 W of electricity for a decent amount of time , depending on who was cranking it .
This worked well enough as a design project , and the team 's final design was fairly impressive .
But as a possible product it was dead-on-arrival .</tokentext>
<sentencetext>At my college there was a large engineering design course as part of the graduation requirements.
The individual projects that teams of 1-4 students took on were solicited from and sponsored by actual companies.
One project the year I took this course sought to develop a way to harness the power of people typing.
The company sponsoring the project wanted to patent the hell out of the technology and use it to run a laptop computer indefinitely.
That was all well and good until someone spent five minutes doing back-of-the-envelope calculations and realized that, even with 100\% harnessing and conversion efficiency, you'd be luck to harness one watt of power - and that was with someone typing 75 words per minute.
This might have been enough to power a bluetooth keyboard, but definitely not even the most power-efficient laptop in the world.
So after that little debacle, the project team launched an entirely new avenue: a handcrank generator that would attach to a standard-issue military flashlight [gstatic.com].
The idea was to use the flashlight as part of the crank, being already there, fairly rugged, and with a right-angle bend in it.
With next to no design effort, their first prototype could be cranked to produce about 30 W of electricity for a decent amount of time, depending on who was cranking it.
This worked well enough as a design project, and the team's final design was fairly impressive.
But as a possible product it was dead-on-arrival.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748244</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749064</id>
	<title>Only possible using longitudinal waves</title>
	<author>lamare</author>
	<datestamp>1263388440000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>The calculations posted here and elsewhere are based on the assumption that the device uses standard transverse electro-magnetic waves for the energy transport. In principle, it could also be possible to use longitudinal electric waves, even though this is generally assumed to be impossible, because it is assumed there are no free charge carriers in vacuum that could support longitudinal electric waves.</p><p>However, the Maxwell equations are based on Faradays experiments and while Faraday was a physicist, Maxwell was a mathematician. Maxwell postulated the concept of charge carriers as causing the electro-magnetic field, while at the present day it is known that EM waves cause matter to exist and not the other way around. So, one can certainly not rule out the possibility that longitudinal electric waves are possible after all.</p><p>This is exactly what the German Professor Meyl points out:<br><a href="http://www.k-meyl.de/go/60\_Primaerliteratur/Scalar-Waves.pdf" title="k-meyl.de" rel="nofollow">http://www.k-meyl.de/go/60\_Primaerliteratur/Scalar-Waves.pdf</a> [k-meyl.de]<br><a href="http://www.energeticforum.com/renewable-energy/3545-konstantin-meyl-scalar-faraday-vs-maxwell.html" title="energeticforum.com" rel="nofollow">http://www.energeticforum.com/renewable-energy/3545-konstantin-meyl-scalar-faraday-vs-maxwell.html</a> [energeticforum.com]</p><p>According to Meyl, one can achieve a very thight coupling between transmitter and reciever and achieve almost 100\% efficiency in the transmission of energy.</p><p>This means that if this thing works, one will have consider the existence of longitudinal waves a very serious possibility.</p></htmltext>
<tokenext>The calculations posted here and elsewhere are based on the assumption that the device uses standard transverse electro-magnetic waves for the energy transport .
In principle , it could also be possible to use longitudinal electric waves , even though this is generally assumed to be impossible , because it is assumed there are no free charge carriers in vacuum that could support longitudinal electric waves.However , the Maxwell equations are based on Faradays experiments and while Faraday was a physicist , Maxwell was a mathematician .
Maxwell postulated the concept of charge carriers as causing the electro-magnetic field , while at the present day it is known that EM waves cause matter to exist and not the other way around .
So , one can certainly not rule out the possibility that longitudinal electric waves are possible after all.This is exactly what the German Professor Meyl points out : http : //www.k-meyl.de/go/60 \ _Primaerliteratur/Scalar-Waves.pdf [ k-meyl.de ] http : //www.energeticforum.com/renewable-energy/3545-konstantin-meyl-scalar-faraday-vs-maxwell.html [ energeticforum.com ] According to Meyl , one can achieve a very thight coupling between transmitter and reciever and achieve almost 100 \ % efficiency in the transmission of energy.This means that if this thing works , one will have consider the existence of longitudinal waves a very serious possibility .</tokentext>
<sentencetext>The calculations posted here and elsewhere are based on the assumption that the device uses standard transverse electro-magnetic waves for the energy transport.
In principle, it could also be possible to use longitudinal electric waves, even though this is generally assumed to be impossible, because it is assumed there are no free charge carriers in vacuum that could support longitudinal electric waves.However, the Maxwell equations are based on Faradays experiments and while Faraday was a physicist, Maxwell was a mathematician.
Maxwell postulated the concept of charge carriers as causing the electro-magnetic field, while at the present day it is known that EM waves cause matter to exist and not the other way around.
So, one can certainly not rule out the possibility that longitudinal electric waves are possible after all.This is exactly what the German Professor Meyl points out:http://www.k-meyl.de/go/60\_Primaerliteratur/Scalar-Waves.pdf [k-meyl.de]http://www.energeticforum.com/renewable-energy/3545-konstantin-meyl-scalar-faraday-vs-maxwell.html [energeticforum.com]According to Meyl, one can achieve a very thight coupling between transmitter and reciever and achieve almost 100\% efficiency in the transmission of energy.This means that if this thing works, one will have consider the existence of longitudinal waves a very serious possibility.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748672</id>
	<title>Re:Snake Oil</title>
	<author>johncadengo</author>
	<datestamp>1263382380000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>But why... Why would anyone ever do such a thing!</p></htmltext>
<tokenext>But why... Why would anyone ever do such a thing !</tokentext>
<sentencetext>But why... Why would anyone ever do such a thing!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748260</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749170</id>
	<title>Do **NOT** invoke Tesla</title>
	<author>GuyFawkes</author>
	<datestamp>1263389640000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext><p>Tesla was a very clever man, but his experiments (tesla coil etc) were based on something quite different than "broadcast energy".</p><p>Tesla played with "harmonic" or "tuned" energy, eg take two tuning forks tuned to the same frequency, tap one to set it going, and hold it three inches away from the second one, the second one will start to vibrate, you just transferred energy.</p><p>The primary and secondary circuits in a tesla coil works the same way, not with sound, but with tuned electromagnetic force, it is a tuned step up transformer.</p><p>The SINGLE wireless power experiment that worked recently worked on the same principle, tuned magnetic coupling.</p><p>***This*** device is about simple absorbtion, so yes, it *will* absorb power, and yes it will *charge* a battery, technically speaking, so will your old external TV antenna, satellite dish, ham radio antenna, and indeed how the hell do you think the old crystal / cats whisker radios worked without a battery? It works for RFID too.</p><p>But *practically* the rate of "charge" you get out of this is going to be less than the rate of self discharge, even for s single AAA size rechargeable battery.</p><p>The physical analogy is a steel plate placed in the bottom of an empty swimming pool with indeed grab water condensation from the air overnight and "charge" the swimming pool with water.</p><p>It will NEVER fill the pool though, the self discharge (evaporation) is a faster and more robust process.</p><p>I though slashdotters were supposed to be educated?</p></htmltext>
<tokenext>Tesla was a very clever man , but his experiments ( tesla coil etc ) were based on something quite different than " broadcast energy " .Tesla played with " harmonic " or " tuned " energy , eg take two tuning forks tuned to the same frequency , tap one to set it going , and hold it three inches away from the second one , the second one will start to vibrate , you just transferred energy.The primary and secondary circuits in a tesla coil works the same way , not with sound , but with tuned electromagnetic force , it is a tuned step up transformer.The SINGLE wireless power experiment that worked recently worked on the same principle , tuned magnetic coupling .
* * * This * * * device is about simple absorbtion , so yes , it * will * absorb power , and yes it will * charge * a battery , technically speaking , so will your old external TV antenna , satellite dish , ham radio antenna , and indeed how the hell do you think the old crystal / cats whisker radios worked without a battery ?
It works for RFID too.But * practically * the rate of " charge " you get out of this is going to be less than the rate of self discharge , even for s single AAA size rechargeable battery.The physical analogy is a steel plate placed in the bottom of an empty swimming pool with indeed grab water condensation from the air overnight and " charge " the swimming pool with water.It will NEVER fill the pool though , the self discharge ( evaporation ) is a faster and more robust process.I though slashdotters were supposed to be educated ?</tokentext>
<sentencetext>Tesla was a very clever man, but his experiments (tesla coil etc) were based on something quite different than "broadcast energy".Tesla played with "harmonic" or "tuned" energy, eg take two tuning forks tuned to the same frequency, tap one to set it going, and hold it three inches away from the second one, the second one will start to vibrate, you just transferred energy.The primary and secondary circuits in a tesla coil works the same way, not with sound, but with tuned electromagnetic force, it is a tuned step up transformer.The SINGLE wireless power experiment that worked recently worked on the same principle, tuned magnetic coupling.
***This*** device is about simple absorbtion, so yes, it *will* absorb power, and yes it will *charge* a battery, technically speaking, so will your old external TV antenna, satellite dish, ham radio antenna, and indeed how the hell do you think the old crystal / cats whisker radios worked without a battery?
It works for RFID too.But *practically* the rate of "charge" you get out of this is going to be less than the rate of self discharge, even for s single AAA size rechargeable battery.The physical analogy is a steel plate placed in the bottom of an empty swimming pool with indeed grab water condensation from the air overnight and "charge" the swimming pool with water.It will NEVER fill the pool though, the self discharge (evaporation) is a faster and more robust process.I though slashdotters were supposed to be educated?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30843866</id>
	<title>Re:Do **NOT** invoke Tesla</title>
	<author>Anonymous</author>
	<datestamp>1264070880000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p><div class="quote"><p>I though  slashdotters were supposed to be educated?</p></div><p>WTF?</p><p>Seriously, how long have you been hanging around here?</p></div>
	</htmltext>
<tokenext>I though slashdotters were supposed to be educated ? WTF ? Seriously , how long have you been hanging around here ?</tokentext>
<sentencetext>I though  slashdotters were supposed to be educated?WTF?Seriously, how long have you been hanging around here?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749170</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748340</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>jo\_ham</author>
	<datestamp>1263377520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>As others have pointed out, you need a change in the field to generate current, either by moving through it or moving the thing making the field. You can observe this effect on a high speed aircraft, where there is a measurable potential difference between the wingtips as it flies though the earth's magnetic field. It's not really strong enough to extract anything useful out of it - you couldn't hook it up to a motor and power the plane, for instance. You'd do better bolting PV panels on every exposed surface.</p></htmltext>
<tokenext>As others have pointed out , you need a change in the field to generate current , either by moving through it or moving the thing making the field .
You can observe this effect on a high speed aircraft , where there is a measurable potential difference between the wingtips as it flies though the earth 's magnetic field .
It 's not really strong enough to extract anything useful out of it - you could n't hook it up to a motor and power the plane , for instance .
You 'd do better bolting PV panels on every exposed surface .</tokentext>
<sentencetext>As others have pointed out, you need a change in the field to generate current, either by moving through it or moving the thing making the field.
You can observe this effect on a high speed aircraft, where there is a measurable potential difference between the wingtips as it flies though the earth's magnetic field.
It's not really strong enough to extract anything useful out of it - you couldn't hook it up to a motor and power the plane, for instance.
You'd do better bolting PV panels on every exposed surface.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30800990</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>unitron</author>
	<datestamp>1263721680000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Current moving along (or through) a wire generates a magnetic field.  If you coil up the wire you increase its inductance and that makes the field stronger by concentrating it in a smaller area.</p><p>If you move a magnetic field along that wire you generate a current in it.  If you hold the field still and move the wire, same thing.</p><p>If I were looking to invent something I might look into how much current I could get by having a person carry a coil in their pocket as they move relative to the earth's magnetic field.  In other words, moving around would recharge your cell phone.  The question is how much moving around in how a long a period of time would be necessary.</p></htmltext>
<tokenext>Current moving along ( or through ) a wire generates a magnetic field .
If you coil up the wire you increase its inductance and that makes the field stronger by concentrating it in a smaller area.If you move a magnetic field along that wire you generate a current in it .
If you hold the field still and move the wire , same thing.If I were looking to invent something I might look into how much current I could get by having a person carry a coil in their pocket as they move relative to the earth 's magnetic field .
In other words , moving around would recharge your cell phone .
The question is how much moving around in how a long a period of time would be necessary .</tokentext>
<sentencetext>Current moving along (or through) a wire generates a magnetic field.
If you coil up the wire you increase its inductance and that makes the field stronger by concentrating it in a smaller area.If you move a magnetic field along that wire you generate a current in it.
If you hold the field still and move the wire, same thing.If I were looking to invent something I might look into how much current I could get by having a person carry a coil in their pocket as they move relative to the earth's magnetic field.
In other words, moving around would recharge your cell phone.
The question is how much moving around in how a long a period of time would be necessary.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748696</id>
	<title>Re:back to basics</title>
	<author>MobileTatsu-NJG</author>
	<datestamp>1263382980000</datestamp>
	<modclass>Funny</modclass>
	<modscore>5</modscore>
	<htmltext><p><div class="quote"><p>I'll get more energy with a hand-crank generator...</p></div><p>... depending on which picture is in front of you.</p></div>
	</htmltext>
<tokenext>I 'll get more energy with a hand-crank generator...... depending on which picture is in front of you .</tokentext>
<sentencetext>I'll get more energy with a hand-crank generator...... depending on which picture is in front of you.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748244</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749778</id>
	<title>Re:illegal power density required</title>
	<author>ceoyoyo</author>
	<datestamp>1263394680000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>The local radio station is about a hundred kilowatts.  That's a decent amount of power.</p><p>What you mean is that any device that radiates enough energy in <i>one of the unlicensed bands</i> would be illegal.</p></htmltext>
<tokenext>The local radio station is about a hundred kilowatts .
That 's a decent amount of power.What you mean is that any device that radiates enough energy in one of the unlicensed bands would be illegal .</tokentext>
<sentencetext>The local radio station is about a hundred kilowatts.
That's a decent amount of power.What you mean is that any device that radiates enough energy in one of the unlicensed bands would be illegal.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749084</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749650</id>
	<title>Re:Wireless power transmisstion is possible ...</title>
	<author>Just Brew It!</author>
	<datestamp>1263393720000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Sure, wireless power transmission is possible. But in order for it to be <i>practical</i> it requires a purpose-built transmitter to beam the power at the device to be powered/charged. This thing claims to harvest ambient WiFi signals, which is blatant BS.</p></htmltext>
<tokenext>Sure , wireless power transmission is possible .
But in order for it to be practical it requires a purpose-built transmitter to beam the power at the device to be powered/charged .
This thing claims to harvest ambient WiFi signals , which is blatant BS .</tokentext>
<sentencetext>Sure, wireless power transmission is possible.
But in order for it to be practical it requires a purpose-built transmitter to beam the power at the device to be powered/charged.
This thing claims to harvest ambient WiFi signals, which is blatant BS.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748530</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30764714</id>
	<title>Sounds like Tesla to me</title>
	<author>robinstar1574</author>
	<datestamp>1263486660000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Tesla proposed this back in the 1800's, and now somebody is bringing it into reality. +8 to the genius who proposed it.</p></htmltext>
<tokenext>Tesla proposed this back in the 1800 's , and now somebody is bringing it into reality .
+ 8 to the genius who proposed it .</tokentext>
<sentencetext>Tesla proposed this back in the 1800's, and now somebody is bringing it into reality.
+8 to the genius who proposed it.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749580</id>
	<title>Not just snake oil...</title>
	<author>Just Brew It!</author>
	<datestamp>1263393300000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>...highly refined snake oil! Just look at that sleek case!</p><p>There is no way this can work as described. The device itself isn't large enough to gather power at anything near the required rate (you'd need a sizeable antenna to do that). The internal leakage current of the rechargeable batteries it supposedly contains is probably greater than the amount of power it could gather; even disregarding this, it would take so long to charge from WiFi signals alone that it would not be useful.</p></htmltext>
<tokenext>...highly refined snake oil !
Just look at that sleek case ! There is no way this can work as described .
The device itself is n't large enough to gather power at anything near the required rate ( you 'd need a sizeable antenna to do that ) .
The internal leakage current of the rechargeable batteries it supposedly contains is probably greater than the amount of power it could gather ; even disregarding this , it would take so long to charge from WiFi signals alone that it would not be useful .</tokentext>
<sentencetext>...highly refined snake oil!
Just look at that sleek case!There is no way this can work as described.
The device itself isn't large enough to gather power at anything near the required rate (you'd need a sizeable antenna to do that).
The internal leakage current of the rechargeable batteries it supposedly contains is probably greater than the amount of power it could gather; even disregarding this, it would take so long to charge from WiFi signals alone that it would not be useful.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748404</id>
	<title>Nokia's working on this too</title>
	<author>Sockatume</author>
	<datestamp>1263378480000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext><p>Nokia proposed a power-harvesting (and power-sipping) handset over the summer last year, to derive its power from cellular signals rather than wi-fi. Although their target amount of 50mW is way off, they claim to have a prototype that can pull in a few milliwatts, which inspired a mixture of scepticism and existential terror from researchers in the field.</p></htmltext>
<tokenext>Nokia proposed a power-harvesting ( and power-sipping ) handset over the summer last year , to derive its power from cellular signals rather than wi-fi .
Although their target amount of 50mW is way off , they claim to have a prototype that can pull in a few milliwatts , which inspired a mixture of scepticism and existential terror from researchers in the field .</tokentext>
<sentencetext>Nokia proposed a power-harvesting (and power-sipping) handset over the summer last year, to derive its power from cellular signals rather than wi-fi.
Although their target amount of 50mW is way off, they claim to have a prototype that can pull in a few milliwatts, which inspired a mixture of scepticism and existential terror from researchers in the field.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748010</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>zmollusc</author>
	<datestamp>1263415800000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>4</modscore>
	<htmltext><p>I think it is the \_change\_ in magnetic flux that generates a current in a conductor, not just the presence of magnetism.</p></htmltext>
<tokenext>I think it is the \ _change \ _ in magnetic flux that generates a current in a conductor , not just the presence of magnetism .</tokentext>
<sentencetext>I think it is the \_change\_ in magnetic flux that generates a current in a conductor, not just the presence of magnetism.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748160</id>
	<title>Re:Yeah, tens of meters from a 50mW power source..</title>
	<author>pydev</author>
	<datestamp>1263374580000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Well, we can't do much about the inverse square law, but we can easily switch to linear units.<nobr> <wbr></nobr>:-)</p></htmltext>
<tokenext>Well , we ca n't do much about the inverse square law , but we can easily switch to linear units .
: - )</tokentext>
<sentencetext>Well, we can't do much about the inverse square law, but we can easily switch to linear units.
:-)</sentencetext>
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--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30904122
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-http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749938
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30756968
-http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30755274
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--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30749678
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30754634
-http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30747986
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748112
---http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30751974
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748010
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30800990
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--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748340
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748344
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30750586
-http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_01_13_0149253.30748160
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