posted on Oct, 7 2009 @ 05:54 PM
The average kinetic energy of those first four forms of matter do generally increase. Photons are not matter in the same sense as the first four
forms are. Photons are the carrier particle for the electro-magnetic force. Everything from radio waves, light, gamma radiation, etc, is carried by
photons of various wavelengths and frequency.
Photons are not composed of protons, neutrons, and or electrons as the other forms of matter are, however. They are fundamental particles in the same
way a gluon (strong nuclear force), graviton (gravitational force), and bosons (weak nuclear force) are carrier particle for their respective forces.