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, 201213 yr by alpha2cen

Because temperature is nothing more than kinetic energy of molecules. A high temperature means the molecules have a high kinetic energy. E_k = 0.5 m v²

Because temperature is nothing more than kinetic energy of molecules. A high temperature means the molecules have a high kinetic energy. E_k = 0.5 m v²

 

How to change radiation energy to kinetic energy?

Edited October 13, 201213 yr by alpha2cen

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.

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?

The light will scatter off of the atoms, but the strongest effect will be collisions with the surface.

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.