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| Subject | Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? |
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| Newsgroups | sci.physics |
| References | <peCdnSxrJMxokorLnZ2dnUU7-bkAAAAA@giganews.com> <89rjec-aqf.ln1@mail.specsol.com> <Vv2dnekZ_-PyUorLnZ2dnUU7-bGdnZ2d@giganews.com> <ib0uec-bek.ln1@mail.specsol.com> |
| From | Sam Wormley <swormley1@gmail.com> |
| Date | 2015-10-12 21:23 -0500 |
| Message-ID | <YN2dndw69ru59oHLnZ2dnUU7-RmdnZ2d@giganews.com> (permalink) |
On 10/12/15 7:37 PM, jimp@specsol.spam.sux.com wrote: > > The spamming, ignorant shit head is jealous of an actual education. > > > Actually I always thought the jimp was jealous of those that provide content. :-o How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? > http://www.askamathematician.com/2013/01/qhow-do-lenses-that-concentrate-light-not-violate-the-second-law-of-thermodynamics-if-you-use-a-magnifying-glass-to-burn-ants-arent-you-making-a-point-hotter-than-the-ambient-temperature-without/ > Physicist: This is a surprisingly subtle question. > > It certainly impossible to create new energy, but there’s nothing to > stop you from piping energy from one place to another (say, by > running hot water from a boiler to somewhere else). The case of > sunlight and a lens is just a matter of controlling where the energy > is going in a slightly more abstract way. Focusing light from the > Sun doesn’t decrease entropy, because what a lens does (this is a > little hand-wavy) is to exchange “direction information” for > “position information”. The light from one direction (from the > direction of the Sun) gets brought together in one position (the > focus). Keep reading. -- sci.physics is an unmoderated newsgroup dedicated to the discussion of physics, news from the physics community, and physics-related social issues.
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How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? Sam Wormley <swormley1@gmail.com> - 2015-10-08 19:53 -0500
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Double-A <double-a3@hush.com> - 2015-10-08 17:58 -0700
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Poutnik <poutnik4nntp@gmail.com> - 2015-10-09 08:07 +0200
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Angelo <patrizio.pan-2002@libero.it> - 2015-10-09 09:18 -0700
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Poutnik <Poutnik4NNTP@gmail.com> - 2015-10-09 18:54 +0200
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? jimp@specsol.spam.sux.com - 2015-10-09 04:09 +0000
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? Sam Wormley <swormley1@gmail.com> - 2015-10-09 09:30 -0500
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? jimp@specsol.spam.sux.com - 2015-10-13 00:37 +0000
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? Sam Wormley <swormley1@gmail.com> - 2015-10-12 21:23 -0500
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren’t you making a point hotter than the ambient temperature without losing energy? jimp@specsol.spam.sux.com - 2015-10-13 02:56 +0000
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Angelo <patrizio.pan-2002@libero.it> - 2015-10-09 09:26 -0700
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-09 10:49 -0700
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Sam Wormley <swormley1@gmail.com> - 2015-10-09 12:53 -0500
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Bret Cahill <bretcahill@aol.com> - 2015-10-09 12:54 -0700
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-09 12:57 -0700
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? Sam Wormley <swormley1@gmail.com> - 2015-10-09 15:12 -0500
Re: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient temperature without losing energy? "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-09 13:19 -0700
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