<article>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#article10_02_16_1818234</id>
	<title>Measuring the Speed of Light With Valentine's Day Chocolate</title>
	<author>samzenpus</author>
	<datestamp>1266307440000</datestamp>
	<htmltext>Cytotoxic writes <i>"What to do with all of those leftover Valentine's Day chocolates? &mdash; a common problem for the Slashdot crowd.  The folks over at Wired magazine have an answer for you in a nice article showing how to <a href="http://www.wired.com/geekdad/2010/02/leftover-valentines-chocolate-use-it-to-measure-the-speed-of-light/">measure the speed of light</a> with a microwave and some chocolate.  A simple yet surprisingly accurate method that can be used to introduce the scientific method to children and others in need of a scientific education."</i></htmltext>
<tokenext>Cytotoxic writes " What to do with all of those leftover Valentine 's Day chocolates ?
   a common problem for the Slashdot crowd .
The folks over at Wired magazine have an answer for you in a nice article showing how to measure the speed of light with a microwave and some chocolate .
A simple yet surprisingly accurate method that can be used to introduce the scientific method to children and others in need of a scientific education .
"</tokentext>
<sentencetext>Cytotoxic writes "What to do with all of those leftover Valentine's Day chocolates?
— a common problem for the Slashdot crowd.
The folks over at Wired magazine have an answer for you in a nice article showing how to measure the speed of light with a microwave and some chocolate.
A simple yet surprisingly accurate method that can be used to introduce the scientific method to children and others in need of a scientific education.
"</sentencetext>
</article>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159446</id>
	<title>Slashdot doesn't recongnize this holiday!</title>
	<author>Anonymous</author>
	<datestamp>1266311340000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>What is this Valentine's Day Chocolate thing? This mythical concept called a "girlfriend" seems strange around here. Do we have any proof such people exist?</htmltext>
<tokenext>What is this Valentine 's Day Chocolate thing ?
This mythical concept called a " girlfriend " seems strange around here .
Do we have any proof such people exist ?</tokentext>
<sentencetext>What is this Valentine's Day Chocolate thing?
This mythical concept called a "girlfriend" seems strange around here.
Do we have any proof such people exist?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31163926</id>
	<title>Re:you can use chocolate to measure speed of light</title>
	<author>Anonymous</author>
	<datestamp>1266335880000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>It's even better to use chocolate to measure the speed of <i>seducing</i> a female.</p></htmltext>
<tokenext>It 's even better to use chocolate to measure the speed of seducing a female .</tokentext>
<sentencetext>It's even better to use chocolate to measure the speed of seducing a female.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159476</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31161712</id>
	<title>I don't know about "the speed of light"...</title>
	<author>93 Escort Wagon</author>
	<datestamp>1266321780000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>... but those chocolates did disappear pretty darn fast at our house.</p></htmltext>
<tokenext>... but those chocolates did disappear pretty darn fast at our house .</tokentext>
<sentencetext>... but those chocolates did disappear pretty darn fast at our house.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31181662</id>
	<title>Re:But how do you count the cycles?</title>
	<author>Anonymous</author>
	<datestamp>1266487140000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Damn you!  that cracked my glass platter.  and I only got to 1.5 billion revs per second.</p><p>Dammit. Now I have glass all over the friggin kitchen and embedded in the walls.  Baaaaad idea, that one.</p></htmltext>
<tokenext>Damn you !
that cracked my glass platter .
and I only got to 1.5 billion revs per second.Dammit .
Now I have glass all over the friggin kitchen and embedded in the walls .
Baaaaad idea , that one .</tokentext>
<sentencetext>Damn you!
that cracked my glass platter.
and I only got to 1.5 billion revs per second.Dammit.
Now I have glass all over the friggin kitchen and embedded in the walls.
Baaaaad idea, that one.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160636</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160394</id>
	<title>Re:You have to assume you know the frequency....</title>
	<author>batquux</author>
	<datestamp>1266315540000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>You can solve for the frequency using the speed of light and the wavelength. OH! Hmm....</p></htmltext>
<tokenext>You can solve for the frequency using the speed of light and the wavelength .
OH ! Hmm... .</tokentext>
<sentencetext>You can solve for the frequency using the speed of light and the wavelength.
OH! Hmm....</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159710</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31163500</id>
	<title>Re:Not measuring speed of light at all</title>
	<author>Anonymous</author>
	<datestamp>1266332460000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I think the experiment might work better if you figure the speed of light is a known constant (easily looked up) and you're trying to determine the frequency of the microwave. You'd perform the same steps to measure the wavelength and a slightly different calculation to determine the frequency from C and the measurement. Then you get a more dramatic "did we get it" moment when you check the back of the microwave for the stated frequency.</p></htmltext>
<tokenext>I think the experiment might work better if you figure the speed of light is a known constant ( easily looked up ) and you 're trying to determine the frequency of the microwave .
You 'd perform the same steps to measure the wavelength and a slightly different calculation to determine the frequency from C and the measurement .
Then you get a more dramatic " did we get it " moment when you check the back of the microwave for the stated frequency .</tokentext>
<sentencetext>I think the experiment might work better if you figure the speed of light is a known constant (easily looked up) and you're trying to determine the frequency of the microwave.
You'd perform the same steps to measure the wavelength and a slightly different calculation to determine the frequency from C and the measurement.
Then you get a more dramatic "did we get it" moment when you check the back of the microwave for the stated frequency.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31162078</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159614</id>
	<title>Re:Slashdot doesn't recongnize this holiday!</title>
	<author>Monkeedude1212</author>
	<datestamp>1266312120000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I'm pretty sure I read about girlfriends in Popular Science...</p></htmltext>
<tokenext>I 'm pretty sure I read about girlfriends in Popular Science.. .</tokentext>
<sentencetext>I'm pretty sure I read about girlfriends in Popular Science...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159446</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159650</id>
	<title>Sheldon Cooper??</title>
	<author>kai\_hiwatari</author>
	<datestamp>1266312360000</datestamp>
	<modclass>Funny</modclass>
	<modscore>3</modscore>
	<htmltext>Is this what Dr. Sheldon Lee Cooper do on Valentines Day?</htmltext>
<tokenext>Is this what Dr. Sheldon Lee Cooper do on Valentines Day ?</tokentext>
<sentencetext>Is this what Dr. Sheldon Lee Cooper do on Valentines Day?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31161254</id>
	<title>Re:But how do you count the cycles?</title>
	<author>revengebomber</author>
	<datestamp>1266319500000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>It melts the chocolate, so it's gotta be reverberating with the water? I assumed that's how you know the frequency.</htmltext>
<tokenext>It melts the chocolate , so it 's got ta be reverberating with the water ?
I assumed that 's how you know the frequency .</tokentext>
<sentencetext>It melts the chocolate, so it's gotta be reverberating with the water?
I assumed that's how you know the frequency.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160636</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159604</id>
	<title>Leftover Valentine's Day chocolates?</title>
	<author>Anonymous</author>
	<datestamp>1266312120000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Yup, I think I've got some of that sitting beside my over-unity generator and my copy of Duke Nukem Forever.</p></htmltext>
<tokenext>Yup , I think I 've got some of that sitting beside my over-unity generator and my copy of Duke Nukem Forever .</tokentext>
<sentencetext>Yup, I think I've got some of that sitting beside my over-unity generator and my copy of Duke Nukem Forever.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31163602</id>
	<title>Re:But how do you count the cycles?</title>
	<author>RudeIota</author>
	<datestamp>1266333360000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>but what's an easy way to verify that the frequency is really 2,450,000,000 hertz</p></div><p>It's in the user's manual.</p></div>
	</htmltext>
<tokenext>but what 's an easy way to verify that the frequency is really 2,450,000,000 hertzIt 's in the user 's manual .</tokentext>
<sentencetext>but what's an easy way to verify that the frequency is really 2,450,000,000 hertzIt's in the user's manual.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160636</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159476</id>
	<title>you can use chocolate to measure speed of light</title>
	<author>Anonymous</author>
	<datestamp>1266311520000</datestamp>
	<modclass>Funny</modclass>
	<modscore>4</modscore>
	<htmltext><p>although its far more interesting to use chocolate to measure the speed of digestion</p></htmltext>
<tokenext>although its far more interesting to use chocolate to measure the speed of digestion</tokentext>
<sentencetext>although its far more interesting to use chocolate to measure the speed of digestion</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160550</id>
	<title>That's not hard</title>
	<author>Sycraft-fu</author>
	<datestamp>1266316380000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>That is normally listed on the back of the microwave, and is almost always in the 2.4GHz range. You also don't need the figure that precise, given that your result is basically likely to have only about 1 sig fig anyhow. That's fine, since light is extremely close to 300,000,000 m/s. You need 4 sig figs before a discrepancy starts to show up, and you aren't getting that out of an experiment like this.</p><p>Nobody is claiming this is USEFUL, like you are finding out something amazing. After all, we know the speed of light to 9 figures already. This is just a fun type of experiment to show someone the practical application of wave related calculations. You could also run it the other way and calculate the frequency based on the measured wave length and known speed if you like.</p><p>Basic science experiments are always rather worthless in terms of true scientific knowledge. They don't tell you anything you couldn't look up. What they are worth while is in terms of personal knowledge. They show people how science work, they show them that these formulas don't come from nowhere, that they work on real, actual data.</p></htmltext>
<tokenext>That is normally listed on the back of the microwave , and is almost always in the 2.4GHz range .
You also do n't need the figure that precise , given that your result is basically likely to have only about 1 sig fig anyhow .
That 's fine , since light is extremely close to 300,000,000 m/s .
You need 4 sig figs before a discrepancy starts to show up , and you are n't getting that out of an experiment like this.Nobody is claiming this is USEFUL , like you are finding out something amazing .
After all , we know the speed of light to 9 figures already .
This is just a fun type of experiment to show someone the practical application of wave related calculations .
You could also run it the other way and calculate the frequency based on the measured wave length and known speed if you like.Basic science experiments are always rather worthless in terms of true scientific knowledge .
They do n't tell you anything you could n't look up .
What they are worth while is in terms of personal knowledge .
They show people how science work , they show them that these formulas do n't come from nowhere , that they work on real , actual data .</tokentext>
<sentencetext>That is normally listed on the back of the microwave, and is almost always in the 2.4GHz range.
You also don't need the figure that precise, given that your result is basically likely to have only about 1 sig fig anyhow.
That's fine, since light is extremely close to 300,000,000 m/s.
You need 4 sig figs before a discrepancy starts to show up, and you aren't getting that out of an experiment like this.Nobody is claiming this is USEFUL, like you are finding out something amazing.
After all, we know the speed of light to 9 figures already.
This is just a fun type of experiment to show someone the practical application of wave related calculations.
You could also run it the other way and calculate the frequency based on the measured wave length and known speed if you like.Basic science experiments are always rather worthless in terms of true scientific knowledge.
They don't tell you anything you couldn't look up.
What they are worth while is in terms of personal knowledge.
They show people how science work, they show them that these formulas don't come from nowhere, that they work on real, actual data.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159710</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160842</id>
	<title>Re:Waste of good chocolate</title>
	<author>amRadioHed</author>
	<datestamp>1266317700000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Dude, the crap at the convenience store is the left over chocolate. You can pick up a box for dirt cheap.</p></htmltext>
<tokenext>Dude , the crap at the convenience store is the left over chocolate .
You can pick up a box for dirt cheap .</tokentext>
<sentencetext>Dude, the crap at the convenience store is the left over chocolate.
You can pick up a box for dirt cheap.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159790</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159636</id>
	<title>I wonder...</title>
	<author>zero\_out</author>
	<datestamp>1266312240000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I wonder if this works with that nasty fake stuff that Palmer makes.  You know the stuff, made with vegetable oil instead of cocoa butter, and labelled "Milk Chocolate flavored candy"?  It may change the melting dynamics just enough to invalidate the whole experiment.  I bet that stuff isn't even good enough for science experiments.</htmltext>
<tokenext>I wonder if this works with that nasty fake stuff that Palmer makes .
You know the stuff , made with vegetable oil instead of cocoa butter , and labelled " Milk Chocolate flavored candy " ?
It may change the melting dynamics just enough to invalidate the whole experiment .
I bet that stuff is n't even good enough for science experiments .</tokentext>
<sentencetext>I wonder if this works with that nasty fake stuff that Palmer makes.
You know the stuff, made with vegetable oil instead of cocoa butter, and labelled "Milk Chocolate flavored candy"?
It may change the melting dynamics just enough to invalidate the whole experiment.
I bet that stuff isn't even good enough for science experiments.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159612</id>
	<title>Re:Too late</title>
	<author>garg0yle</author>
	<datestamp>1266312120000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Okay, how's <a href="http://scienceblogs.com/sciencepunk/2009/02/pancake\_formula\_says\_cold\_lump.php" title="scienceblogs.com">this</a> [scienceblogs.com]?  A mathematical formula for perfect pancakes...</p></htmltext>
<tokenext>Okay , how 's this [ scienceblogs.com ] ?
A mathematical formula for perfect pancakes.. .</tokentext>
<sentencetext>Okay, how's this [scienceblogs.com]?
A mathematical formula for perfect pancakes...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159514</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31162770</id>
	<title>As seen on TV...</title>
	<author>DrogMan</author>
	<datestamp>1266327480000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Saw this some years back on the Christmas Lectures that the Beeb run... They did it wih a tray of marshmallows... Can't find a link to that though, but did find this one: <a href="http://www.physics.umd.edu/ripe/icpe/newsletters/n34/marshmal.htm" title="umd.edu">http://www.physics.umd.edu/ripe/icpe/newsletters/n34/marshmal.htm</a> [umd.edu]</htmltext>
<tokenext>Saw this some years back on the Christmas Lectures that the Beeb run... They did it wih a tray of marshmallows... Ca n't find a link to that though , but did find this one : http : //www.physics.umd.edu/ripe/icpe/newsletters/n34/marshmal.htm [ umd.edu ]</tokentext>
<sentencetext>Saw this some years back on the Christmas Lectures that the Beeb run... They did it wih a tray of marshmallows... Can't find a link to that though, but did find this one: http://www.physics.umd.edu/ripe/icpe/newsletters/n34/marshmal.htm [umd.edu]</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159514</id>
	<title>Too late</title>
	<author>Anonymous</author>
	<datestamp>1266311700000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>4</modscore>
	<htmltext><p>That was two days ago.  Give us some pancake science!</p></htmltext>
<tokenext>That was two days ago .
Give us some pancake science !</tokentext>
<sentencetext>That was two days ago.
Give us some pancake science!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31165798</id>
	<title>Knew you would soon get even geek girls to divorce</title>
	<author>D4C5CE</author>
	<datestamp>1266348660000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Just give way to your scientific curiosity... and quite literally at the speed of light, this will be the last "distance between peaks and valley, lining up perfectly" that you'll ever get to measure.<nobr> <wbr></nobr>;-)<br>
All further computations shall be done by judges and attorneys, but you'll have lots of time to spare for writing great code afterwards.<nobr> <wbr></nobr>;-}<br>
BTW, the safety instructions miss the warning:<p><div class="quote"><p>Remove all items such as knives, forks and frying pans she might feel an impulse to stab or hit you in the head with..."</p></div></div>
	</htmltext>
<tokenext>Just give way to your scientific curiosity... and quite literally at the speed of light , this will be the last " distance between peaks and valley , lining up perfectly " that you 'll ever get to measure .
; - ) All further computations shall be done by judges and attorneys , but you 'll have lots of time to spare for writing great code afterwards .
; - } BTW , the safety instructions miss the warning : Remove all items such as knives , forks and frying pans she might feel an impulse to stab or hit you in the head with... "</tokentext>
<sentencetext>Just give way to your scientific curiosity... and quite literally at the speed of light, this will be the last "distance between peaks and valley, lining up perfectly" that you'll ever get to measure.
;-)
All further computations shall be done by judges and attorneys, but you'll have lots of time to spare for writing great code afterwards.
;-}
BTW, the safety instructions miss the warning:Remove all items such as knives, forks and frying pans she might feel an impulse to stab or hit you in the head with..."
	</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159802</id>
	<title>Re:Slashdot doesn't recongnize this holiday!</title>
	<author>Anonymous</author>
	<datestamp>1266313020000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>alas, if only most slashdotters were in Japan.  There the women or girls give low cost chocolate to all the guys at work or in school class.  It's called "obligation chocolate" or "pity chocolate", but if there is a guy they really like they give expensive or homemade chocolate with a gift "prospective winner chocolate".</p><p>So no male is without cheap chocolate from a female, at least.</p></htmltext>
<tokenext>alas , if only most slashdotters were in Japan .
There the women or girls give low cost chocolate to all the guys at work or in school class .
It 's called " obligation chocolate " or " pity chocolate " , but if there is a guy they really like they give expensive or homemade chocolate with a gift " prospective winner chocolate " .So no male is without cheap chocolate from a female , at least .</tokentext>
<sentencetext>alas, if only most slashdotters were in Japan.
There the women or girls give low cost chocolate to all the guys at work or in school class.
It's called "obligation chocolate" or "pity chocolate", but if there is a guy they really like they give expensive or homemade chocolate with a gift "prospective winner chocolate".So no male is without cheap chocolate from a female, at least.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159446</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159438</id>
	<title>Darn you, slashdot!</title>
	<author>Anonymous</author>
	<datestamp>1266311340000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Now I'm hungry.</p></htmltext>
<tokenext>Now I 'm hungry .</tokentext>
<sentencetext>Now I'm hungry.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31161436</id>
	<title>this is not scientific at all</title>
	<author>Anonymous</author>
	<datestamp>1266320280000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Unless you provide a mechanism for calculating/confirming the frequency of your microwave, we have done no calculations at all. We have just done algebra... just simple manipulation of the arrangement of the numbers.</p><p>If we simply read the value off the label on our microwave's... then similarly we may as well just read the value for the speed of light from text of a science textbook and proclaim: "I just calculated the speed of light".</p><p>Furthermore, the frequency labeled on your microwave is calculated by the manufacture using techniques which assume the speed of light already. Meaning that the speed of light is not calculated by them or us. But rather, we can extract this assumption using this technique. ie: we end up with a number closely matching the speed of light, but with entirely nothing proven.</p><p>* this is slight of hand. bad science. should not be referenced or used in relation to speed of light calculations. does not demonstrate the scientific process.</p><p>But still... maybe fun for the kids to see/eat. And does demonstrate wave features... like troughs and peaks. Entertaining I guess.</p></htmltext>
<tokenext>Unless you provide a mechanism for calculating/confirming the frequency of your microwave , we have done no calculations at all .
We have just done algebra... just simple manipulation of the arrangement of the numbers.If we simply read the value off the label on our microwave 's... then similarly we may as well just read the value for the speed of light from text of a science textbook and proclaim : " I just calculated the speed of light " .Furthermore , the frequency labeled on your microwave is calculated by the manufacture using techniques which assume the speed of light already .
Meaning that the speed of light is not calculated by them or us .
But rather , we can extract this assumption using this technique .
ie : we end up with a number closely matching the speed of light , but with entirely nothing proven .
* this is slight of hand .
bad science .
should not be referenced or used in relation to speed of light calculations .
does not demonstrate the scientific process.But still... maybe fun for the kids to see/eat .
And does demonstrate wave features... like troughs and peaks .
Entertaining I guess .</tokentext>
<sentencetext>Unless you provide a mechanism for calculating/confirming the frequency of your microwave, we have done no calculations at all.
We have just done algebra... just simple manipulation of the arrangement of the numbers.If we simply read the value off the label on our microwave's... then similarly we may as well just read the value for the speed of light from text of a science textbook and proclaim: "I just calculated the speed of light".Furthermore, the frequency labeled on your microwave is calculated by the manufacture using techniques which assume the speed of light already.
Meaning that the speed of light is not calculated by them or us.
But rather, we can extract this assumption using this technique.
ie: we end up with a number closely matching the speed of light, but with entirely nothing proven.
* this is slight of hand.
bad science.
should not be referenced or used in relation to speed of light calculations.
does not demonstrate the scientific process.But still... maybe fun for the kids to see/eat.
And does demonstrate wave features... like troughs and peaks.
Entertaining I guess.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160298</id>
	<title>This is BS...</title>
	<author>Anonymous</author>
	<datestamp>1266315060000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Microwaves send the field to a rotating reflector in the top of the microwave... This randomizes the wave like light bounding of a bunch of rotating mirrors...</p></htmltext>
<tokenext>Microwaves send the field to a rotating reflector in the top of the microwave... This randomizes the wave like light bounding of a bunch of rotating mirrors.. .</tokentext>
<sentencetext>Microwaves send the field to a rotating reflector in the top of the microwave... This randomizes the wave like light bounding of a bunch of rotating mirrors...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159810</id>
	<title>Re:Too late</title>
	<author>Red Flayer</author>
	<datestamp>1266313080000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Pancakes are great tools for teaching math.  Fractions, geometry, trigonometry...<br> <br>They are good for teaching some chemistry (NaHCO3 + H+  Na+ + CO2 + H2O).<br> <br> But what they are best at, in terms of science, is proving the universal truths of bacon and maple syrup supremacy.</htmltext>
<tokenext>Pancakes are great tools for teaching math .
Fractions , geometry , trigonometry... They are good for teaching some chemistry ( NaHCO3 + H + Na + + CO2 + H2O ) .
But what they are best at , in terms of science , is proving the universal truths of bacon and maple syrup supremacy .</tokentext>
<sentencetext>Pancakes are great tools for teaching math.
Fractions, geometry, trigonometry... They are good for teaching some chemistry (NaHCO3 + H+  Na+ + CO2 + H2O).
But what they are best at, in terms of science, is proving the universal truths of bacon and maple syrup supremacy.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159514</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159770</id>
	<title>Re:you can use chocolate to measure speed of light</title>
	<author>Anonymous</author>
	<datestamp>1266312900000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>or in my case, indigestion</p></htmltext>
<tokenext>or in my case , indigestion</tokentext>
<sentencetext>or in my case, indigestion</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159476</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160422</id>
	<title>Re:You have to assume you know the frequency....</title>
	<author>blueg3</author>
	<datestamp>1266315720000</datestamp>
	<modclass>None</modclass>
	<modscore>2</modscore>
	<htmltext><p>It's stated on the microwave (or in its documentation). They don't get that by knowing the speed of light, but rather by the construction of the device. You could build your own microwave generator to be sure, but assuming that the manufacturer is giving you the correct value is good for an estimate.</p></htmltext>
<tokenext>It 's stated on the microwave ( or in its documentation ) .
They do n't get that by knowing the speed of light , but rather by the construction of the device .
You could build your own microwave generator to be sure , but assuming that the manufacturer is giving you the correct value is good for an estimate .</tokentext>
<sentencetext>It's stated on the microwave (or in its documentation).
They don't get that by knowing the speed of light, but rather by the construction of the device.
You could build your own microwave generator to be sure, but assuming that the manufacturer is giving you the correct value is good for an estimate.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159710</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159600</id>
	<title>This experiment is imprecise and delicious.</title>
	<author>Chris Burke</author>
	<datestamp>1266312060000</datestamp>
	<modclass>Funny</modclass>
	<modscore>5</modscore>
	<htmltext><p>This experiment has lots of problems. *nom nom nom*  First, microwave ovens don't always precisely match the given frequency.  *chomp chomp*  Second, and more importantly -- *chew chew swallow* -- identifying the hotspots and measuring the distance between them is difficult and error prone.  *nom nom*  And that's even when the chocolate is fresh!  It's worse after it's already been partially melted.  *stuff face* So I had to perform many experiments, using fresh chocolate each time, to get an accurate measurement.</p><p>In conclusion, this experiment rules. *nom nom nom nom*</p></htmltext>
<tokenext>This experiment has lots of problems .
* nom nom nom * First , microwave ovens do n't always precisely match the given frequency .
* chomp chomp * Second , and more importantly -- * chew chew swallow * -- identifying the hotspots and measuring the distance between them is difficult and error prone .
* nom nom * And that 's even when the chocolate is fresh !
It 's worse after it 's already been partially melted .
* stuff face * So I had to perform many experiments , using fresh chocolate each time , to get an accurate measurement.In conclusion , this experiment rules .
* nom nom nom nom *</tokentext>
<sentencetext>This experiment has lots of problems.
*nom nom nom*  First, microwave ovens don't always precisely match the given frequency.
*chomp chomp*  Second, and more importantly -- *chew chew swallow* -- identifying the hotspots and measuring the distance between them is difficult and error prone.
*nom nom*  And that's even when the chocolate is fresh!
It's worse after it's already been partially melted.
*stuff face* So I had to perform many experiments, using fresh chocolate each time, to get an accurate measurement.In conclusion, this experiment rules.
*nom nom nom nom*</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160800</id>
	<title>Re:You have to assume you know the frequency....</title>
	<author>PPH</author>
	<datestamp>1266317520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>We're at work designing an experiment to measure it using cold pizza and warm beer.</htmltext>
<tokenext>We 're at work designing an experiment to measure it using cold pizza and warm beer .</tokentext>
<sentencetext>We're at work designing an experiment to measure it using cold pizza and warm beer.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159710</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159582</id>
	<title>Re:Why bother?</title>
	<author>Gerafix</author>
	<datestamp>1266312000000</datestamp>
	<modclass>Funny</modclass>
	<modscore>5</modscore>
	<htmltext>Are you sure? My Texas School Board Approved textbook says the speed of light is exactly the speed it takes God to wink. Coincidence? I think not.</htmltext>
<tokenext>Are you sure ?
My Texas School Board Approved textbook says the speed of light is exactly the speed it takes God to wink .
Coincidence ? I think not .</tokentext>
<sentencetext>Are you sure?
My Texas School Board Approved textbook says the speed of light is exactly the speed it takes God to wink.
Coincidence? I think not.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159494</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31162078</id>
	<title>Not measuring speed of light at all</title>
	<author>Locke2005</author>
	<datestamp>1266323700000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext>Actually, it is measuring the wavelength of the microwave radiation, and assuming the stated frequency is correct, calculating the speed of light from that. However, this is circular, sense the frequency was most likely also calculated by measuring the wavelength!</htmltext>
<tokenext>Actually , it is measuring the wavelength of the microwave radiation , and assuming the stated frequency is correct , calculating the speed of light from that .
However , this is circular , sense the frequency was most likely also calculated by measuring the wavelength !</tokentext>
<sentencetext>Actually, it is measuring the wavelength of the microwave radiation, and assuming the stated frequency is correct, calculating the speed of light from that.
However, this is circular, sense the frequency was most likely also calculated by measuring the wavelength!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159494</id>
	<title>Why bother?</title>
	<author>Anonymous</author>
	<datestamp>1266311580000</datestamp>
	<modclass>Funny</modclass>
	<modscore>1</modscore>
	<htmltext><p>It's approximately 300 000 km/h. 'Nuff said.</p></htmltext>
<tokenext>It 's approximately 300 000 km/h .
'Nuff said .</tokentext>
<sentencetext>It's approximately 300 000 km/h.
'Nuff said.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159792</id>
	<title>Re:you can use chocolate to measure speed of light</title>
	<author>RDW</author>
	<datestamp>1266313020000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>'although its far more interesting to use chocolate to measure the speed of digestion'</p><p>Yes! Reserve the chocolate for this vital research. The microwave experiment is best performed with marshmallows (which aren't really food, anyway):</p><p><a href="http://orbitingfrog.com/blog/2008/05/13/measure-the-speed-of-light-using-your-microwave/" title="orbitingfrog.com">http://orbitingfrog.com/blog/2008/05/13/measure-the-speed-of-light-using-your-microwave/</a> [orbitingfrog.com]</p></htmltext>
<tokenext>'although its far more interesting to use chocolate to measure the speed of digestion'Yes !
Reserve the chocolate for this vital research .
The microwave experiment is best performed with marshmallows ( which are n't really food , anyway ) : http : //orbitingfrog.com/blog/2008/05/13/measure-the-speed-of-light-using-your-microwave/ [ orbitingfrog.com ]</tokentext>
<sentencetext>'although its far more interesting to use chocolate to measure the speed of digestion'Yes!
Reserve the chocolate for this vital research.
The microwave experiment is best performed with marshmallows (which aren't really food, anyway):http://orbitingfrog.com/blog/2008/05/13/measure-the-speed-of-light-using-your-microwave/ [orbitingfrog.com]</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159476</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159710</id>
	<title>You have to assume you know the frequency....</title>
	<author>cpotoso</author>
	<datestamp>1266312660000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Not what I would call completely transparent, eh?</htmltext>
<tokenext>Not what I would call completely transparent , eh ?</tokentext>
<sentencetext>Not what I would call completely transparent, eh?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31161302</id>
	<title>Not quite the measurement you're looking for</title>
	<author>\_\_roo</author>
	<datestamp>1266319740000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>1</modscore>
	<htmltext><p>It's a neat trick, albeit an old one. But it's not quite a real measurement of C. The problem is that you're given the frequency to start with, and a smart high school student will tell you that means you also know the wavelength. So if you trust the frequency rating of the microwave then the only thing you're <em>really</em> doing is verifying that the ruler you're using is accurate.</p></htmltext>
<tokenext>It 's a neat trick , albeit an old one .
But it 's not quite a real measurement of C. The problem is that you 're given the frequency to start with , and a smart high school student will tell you that means you also know the wavelength .
So if you trust the frequency rating of the microwave then the only thing you 're really doing is verifying that the ruler you 're using is accurate .</tokentext>
<sentencetext>It's a neat trick, albeit an old one.
But it's not quite a real measurement of C. The problem is that you're given the frequency to start with, and a smart high school student will tell you that means you also know the wavelength.
So if you trust the frequency rating of the microwave then the only thing you're really doing is verifying that the ruler you're using is accurate.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160920</id>
	<title>Easy calculation</title>
	<author>GodfatherofSoul</author>
	<datestamp>1266318000000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>The fastest rate your girlfriend can cram them into her mouth when she doesn't think you're looking.</htmltext>
<tokenext>The fastest rate your girlfriend can cram them into her mouth when she does n't think you 're looking .</tokentext>
<sentencetext>The fastest rate your girlfriend can cram them into her mouth when she doesn't think you're looking.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31161188</id>
	<title>Seen it done with cheese too...</title>
	<author>syousef</author>
	<datestamp>1266319200000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Though as far as I'm concerned it's cheating looking up the frequency of the microwave. It should be measured, which isn't as easy.</p><p>If only Ole R&#248;mer had had a microwave oven<nobr> <wbr></nobr>;-)</p></htmltext>
<tokenext>Though as far as I 'm concerned it 's cheating looking up the frequency of the microwave .
It should be measured , which is n't as easy.If only Ole R   mer had had a microwave oven ; - )</tokentext>
<sentencetext>Though as far as I'm concerned it's cheating looking up the frequency of the microwave.
It should be measured, which isn't as easy.If only Ole Rømer had had a microwave oven ;-)</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31162200</id>
	<title>Too many unknowns</title>
	<author>Anonymous</author>
	<datestamp>1266324300000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>In a "real" experiment to measure the speed of light, we wouldn't know the frequency. Hence, we have 2 unknowns (frequency and speed) and only 1 equation, which is insufficient for determining a unique speed.</p></htmltext>
<tokenext>In a " real " experiment to measure the speed of light , we would n't know the frequency .
Hence , we have 2 unknowns ( frequency and speed ) and only 1 equation , which is insufficient for determining a unique speed .</tokentext>
<sentencetext>In a "real" experiment to measure the speed of light, we wouldn't know the frequency.
Hence, we have 2 unknowns (frequency and speed) and only 1 equation, which is insufficient for determining a unique speed.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31166942</id>
	<title>Re:But how do you count the cycles?</title>
	<author>Anonymous</author>
	<datestamp>1265022900000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>&gt; Spin the turntable at 2,450,000,000 revolutions per second and look for stroboscopic effects on the chocolate?</p><p>Relativity prevents your turntable's radius from being larger than 1.949 cm.</p><p>Besides, at a very tiny fraction of that speed chocolate would break apart and fly into your girlfriend's mouth.</p></htmltext>
<tokenext>&gt; Spin the turntable at 2,450,000,000 revolutions per second and look for stroboscopic effects on the chocolate ? Relativity prevents your turntable 's radius from being larger than 1.949 cm.Besides , at a very tiny fraction of that speed chocolate would break apart and fly into your girlfriend 's mouth .</tokentext>
<sentencetext>&gt; Spin the turntable at 2,450,000,000 revolutions per second and look for stroboscopic effects on the chocolate?Relativity prevents your turntable's radius from being larger than 1.949 cm.Besides, at a very tiny fraction of that speed chocolate would break apart and fly into your girlfriend's mouth.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160636</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159594</id>
	<title>Re:Why bother?</title>
	<author>Anonymous</author>
	<datestamp>1266312060000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Because it's fun and an interesting way to teach kids both math and science. You know, you don't have to be an asshat every day.</htmltext>
<tokenext>Because it 's fun and an interesting way to teach kids both math and science .
You know , you do n't have to be an asshat every day .</tokentext>
<sentencetext>Because it's fun and an interesting way to teach kids both math and science.
You know, you don't have to be an asshat every day.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159494</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159570</id>
	<title>Re:Why bother?</title>
	<author>garg0yle</author>
	<datestamp>1266312000000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>3</modscore>
	<htmltext><p>I think you mean approximately 300 000 km/s, not km/h.  You're only out by a factor of 3600, no worries!</p></htmltext>
<tokenext>I think you mean approximately 300 000 km/s , not km/h .
You 're only out by a factor of 3600 , no worries !</tokentext>
<sentencetext>I think you mean approximately 300 000 km/s, not km/h.
You're only out by a factor of 3600, no worries!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159494</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31161648</id>
	<title>New here?</title>
	<author>rec9140</author>
	<datestamp>1266321420000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext><p>"Valentine's Day chocolates?  a common problem for the Slashdot crowd."</p><p>What is this Valentines Day? What does it have to with chocolate? ?</p><p>I think your new here, as that not on the list of IT holidays...</p><p>And there is NEVER left over chocolate, err.. REAL chocolate.. not that crap Hershey stuff (AND NO I don't buy Cadbury in the US! I know its licensed to be made by Hershey.. I have importers bring in the REAL CADBURYS!)</p><p>Just like beer if its made in the US, its junk. Same goes for chocolate.</p><p>Want cheap chocoloate, purchase all the Hershey you want.</p></htmltext>
<tokenext>" Valentine 's Day chocolates ?
a common problem for the Slashdot crowd .
" What is this Valentines Day ?
What does it have to with chocolate ?
? I think your new here , as that not on the list of IT holidays...And there is NEVER left over chocolate , err.. REAL chocolate.. not that crap Hershey stuff ( AND NO I do n't buy Cadbury in the US !
I know its licensed to be made by Hershey.. I have importers bring in the REAL CADBURYS !
) Just like beer if its made in the US , its junk .
Same goes for chocolate.Want cheap chocoloate , purchase all the Hershey you want .</tokentext>
<sentencetext>"Valentine's Day chocolates?
a common problem for the Slashdot crowd.
"What is this Valentines Day?
What does it have to with chocolate?
?I think your new here, as that not on the list of IT holidays...And there is NEVER left over chocolate, err.. REAL chocolate.. not that crap Hershey stuff (AND NO I don't buy Cadbury in the US!
I know its licensed to be made by Hershey.. I have importers bring in the REAL CADBURYS!
)Just like beer if its made in the US, its junk.
Same goes for chocolate.Want cheap chocoloate, purchase all the Hershey you want.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31167290</id>
	<title>What?</title>
	<author>Anonymous</author>
	<datestamp>1265027040000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p><div class="quote"><p>What to do with all of those leftover Valentine's Day chocolates? &mdash; a common problem for the Slashdot crowd</p></div><p>Bullshit</p></div>
	</htmltext>
<tokenext>What to do with all of those leftover Valentine 's Day chocolates ?
   a common problem for the Slashdot crowdBullshit</tokentext>
<sentencetext>What to do with all of those leftover Valentine's Day chocolates?
— a common problem for the Slashdot crowdBullshit
	</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31159790</id>
	<title>Waste of good chocolate</title>
	<author>Anonymous</author>
	<datestamp>1266312960000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>While I have some Valentines chocolate remaining uneaten, none of it is 'left over'.<br>
&nbsp; <br>It's far too valuable to melt (thus destroying many of it's finer qualities), a) because it's quality chocolate rather than crap picked up at the convenience store, and b) my wife handpicked the assortment for me catering to my tastes.</p></htmltext>
<tokenext>While I have some Valentines chocolate remaining uneaten , none of it is 'left over' .
  It 's far too valuable to melt ( thus destroying many of it 's finer qualities ) , a ) because it 's quality chocolate rather than crap picked up at the convenience store , and b ) my wife handpicked the assortment for me catering to my tastes .</tokentext>
<sentencetext>While I have some Valentines chocolate remaining uneaten, none of it is 'left over'.
  It's far too valuable to melt (thus destroying many of it's finer qualities), a) because it's quality chocolate rather than crap picked up at the convenience store, and b) my wife handpicked the assortment for me catering to my tastes.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31162854</id>
	<title>Wrong answer?</title>
	<author>Anonymous</author>
	<datestamp>1266327960000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>The two hotspots should both be nodes, surely. So, the experiment actually gives the wrong answer, if you use the calculation given.</p></htmltext>
<tokenext>The two hotspots should both be nodes , surely .
So , the experiment actually gives the wrong answer , if you use the calculation given .</tokentext>
<sentencetext>The two hotspots should both be nodes, surely.
So, the experiment actually gives the wrong answer, if you use the calculation given.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160372</id>
	<title>Re:This experiment is imprecise and delicious.</title>
	<author>mathfeel</author>
	<datestamp>1266315420000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>This experiment has lots of problems. *nom nom nom*  First, microwave ovens don't always precisely match the given frequency.  *chomp chomp*  Second, and more importantly -- *chew chew swallow* -- identifying the hotspots and measuring the distance between them is difficult and error prone.  *nom nom*  And that's even when the chocolate is fresh!  It's worse after it's already been partially melted.  *stuff face* So I had to perform many experiments, using fresh chocolate each time, to get an accurate measurement.</p><p>In conclusion, this experiment rules. *nom nom nom nom*</p></div><p>Yes, that's why there is such thing as uncertainty. If she propagated the uncertainty both in the frequency and the "eye-balling" part correctly it will probably include a large enough error bar pass the actual speed of light, making this an accurate, but imprecise experiment.
<br>
Oh wait, are we talking about a fun project to be doing with you kid, or a collage physics lab.</p></div>
	</htmltext>
<tokenext>This experiment has lots of problems .
* nom nom nom * First , microwave ovens do n't always precisely match the given frequency .
* chomp chomp * Second , and more importantly -- * chew chew swallow * -- identifying the hotspots and measuring the distance between them is difficult and error prone .
* nom nom * And that 's even when the chocolate is fresh !
It 's worse after it 's already been partially melted .
* stuff face * So I had to perform many experiments , using fresh chocolate each time , to get an accurate measurement.In conclusion , this experiment rules .
* nom nom nom nom * Yes , that 's why there is such thing as uncertainty .
If she propagated the uncertainty both in the frequency and the " eye-balling " part correctly it will probably include a large enough error bar pass the actual speed of light , making this an accurate , but imprecise experiment .
Oh wait , are we talking about a fun project to be doing with you kid , or a collage physics lab .</tokentext>
<sentencetext>This experiment has lots of problems.
*nom nom nom*  First, microwave ovens don't always precisely match the given frequency.
*chomp chomp*  Second, and more importantly -- *chew chew swallow* -- identifying the hotspots and measuring the distance between them is difficult and error prone.
*nom nom*  And that's even when the chocolate is fresh!
It's worse after it's already been partially melted.
*stuff face* So I had to perform many experiments, using fresh chocolate each time, to get an accurate measurement.In conclusion, this experiment rules.
*nom nom nom nom*Yes, that's why there is such thing as uncertainty.
If she propagated the uncertainty both in the frequency and the "eye-balling" part correctly it will probably include a large enough error bar pass the actual speed of light, making this an accurate, but imprecise experiment.
Oh wait, are we talking about a fun project to be doing with you kid, or a collage physics lab.
	</sentencetext>
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<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31160636</id>
	<title>But how do you count the cycles?</title>
	<author>dpbsmith</author>
	<datestamp>1266316800000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>3</modscore>
	<htmltext><p>OK, so you get the wavelength from the melted chocolate hot spots, but what's an easy way to verify that the frequency is really 2,450,000,000 hertz, from first principles?</p><p>Spin the turntable at 2,450,000,000 revolutions per second and look for stroboscopic effects on the chocolate?</p></htmltext>
<tokenext>OK , so you get the wavelength from the melted chocolate hot spots , but what 's an easy way to verify that the frequency is really 2,450,000,000 hertz , from first principles ? Spin the turntable at 2,450,000,000 revolutions per second and look for stroboscopic effects on the chocolate ?</tokentext>
<sentencetext>OK, so you get the wavelength from the melted chocolate hot spots, but what's an easy way to verify that the frequency is really 2,450,000,000 hertz, from first principles?Spin the turntable at 2,450,000,000 revolutions per second and look for stroboscopic effects on the chocolate?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31162134</id>
	<title>Nothing to do with the speed of light</title>
	<author>Anonymous</author>
	<datestamp>1266324000000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I am really surprised that I could not find one comment that avoided the Emperor's Clothes effect.<br>They all assume that measuring the wavelength or frequency tells us about speed.</p><p>Think on this: Across the visible spectrum the colours have different frequencies (450 to 750 THz) but all travel at the same speed, 299792 km/s in a vacuum.</p><p>--Loki3</p></htmltext>
<tokenext>I am really surprised that I could not find one comment that avoided the Emperor 's Clothes effect.They all assume that measuring the wavelength or frequency tells us about speed.Think on this : Across the visible spectrum the colours have different frequencies ( 450 to 750 THz ) but all travel at the same speed , 299792 km/s in a vacuum.--Loki3</tokentext>
<sentencetext>I am really surprised that I could not find one comment that avoided the Emperor's Clothes effect.They all assume that measuring the wavelength or frequency tells us about speed.Think on this: Across the visible spectrum the colours have different frequencies (450 to 750 THz) but all travel at the same speed, 299792 km/s in a vacuum.--Loki3</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment10_02_16_1818234.31162820</id>
	<title>Not a very good experiment</title>
	<author>tiberiumx</author>
	<datestamp>1266327660000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>This is a pretty crappy experiment.  I've done this before, but covered the bottom of my microwave with water soaked sheets of paper (which allows a constant height and full coverege) instead of chocolate.  You do get a number of hot spots (where the paper completely dries), but they appear to be randomly spaced.  The only way this experiment "works" is when you identify two spots that happen to be somewhat close to 12.5 cm apart (the value you're expecting -- 3e8/2.4e9) and ignore all of the other possible spacings.  Microwave propagation in a microwave oven isn't nearly as simplistic as this experiment would require.</htmltext>
<tokenext>This is a pretty crappy experiment .
I 've done this before , but covered the bottom of my microwave with water soaked sheets of paper ( which allows a constant height and full coverege ) instead of chocolate .
You do get a number of hot spots ( where the paper completely dries ) , but they appear to be randomly spaced .
The only way this experiment " works " is when you identify two spots that happen to be somewhat close to 12.5 cm apart ( the value you 're expecting -- 3e8/2.4e9 ) and ignore all of the other possible spacings .
Microwave propagation in a microwave oven is n't nearly as simplistic as this experiment would require .</tokentext>
<sentencetext>This is a pretty crappy experiment.
I've done this before, but covered the bottom of my microwave with water soaked sheets of paper (which allows a constant height and full coverege) instead of chocolate.
You do get a number of hot spots (where the paper completely dries), but they appear to be randomly spaced.
The only way this experiment "works" is when you identify two spots that happen to be somewhat close to 12.5 cm apart (the value you're expecting -- 3e8/2.4e9) and ignore all of the other possible spacings.
Microwave propagation in a microwave oven isn't nearly as simplistic as this experiment would require.</sentencetext>
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