alpha2cen Posted October 13, 2012 Share Posted October 13, 2012 (edited) We know very well gas molecules moving fast at high temperature. Then, what makes gas molecules moving fast at high temperature? Low temperature -------> high temperature How to change radiation energy to kinetic energy? Edited October 13, 2012 by alpha2cen Link to comment Share on other sites More sharing options...
Fuzzwood Posted October 13, 2012 Share Posted October 13, 2012 Because temperature is nothing more than kinetic energy of molecules. A high temperature means the molecules have a high kinetic energy. Ek = 0.5 m v² Link to comment Share on other sites More sharing options...
alpha2cen Posted October 13, 2012 Author Share Posted October 13, 2012 (edited) Because temperature is nothing more than kinetic energy of molecules. A high temperature means the molecules have a high kinetic energy. Ek = 0.5 m v² How to change radiation energy to kinetic energy? Edited October 13, 2012 by alpha2cen Link to comment Share on other sites More sharing options...
swansont Posted October 13, 2012 Share Posted October 13, 2012 How to change radiation energy to kinetic energy? Have the light scatter off of the atoms. It's most efficient when the light is resonant, but happens in general. Link to comment Share on other sites More sharing options...
alpha2cen Posted October 13, 2012 Author Share Posted October 13, 2012 Have the light scatter off of the atoms. It's most efficient when the light is resonant, but happens in general. This is a temperature changed state on the solid surface. The waves changed from long wave to short wave. How the wave change effects the movement of molecules? Link to comment Share on other sites More sharing options...
swansont Posted October 14, 2012 Share Posted October 14, 2012 The light will scatter off of the atoms, but the strongest effect will be collisions with the surface. Link to comment Share on other sites More sharing options...
John Cuthber Posted October 14, 2012 Share Posted October 14, 2012 It might help to point out that the atoms from which the surface is composed will be vibrating more strongly when it is hot. If the gas is cold and the solid warm then the gas molecules that hit it will be bounced off faster than they were moving before they hit it. Link to comment Share on other sites More sharing options...
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