Art Unwin wrote:
Does your photon come in different sizes,
color and potential energy?

It comes in different wavelengths. It certainly
comes in any and all colors and frequencies outside
the range of "color". All of its energy is the
result of its speed of light velocity. It has
zero rest mass. It has the equivalent of mass
when traveling at the speed of light. m=e/c^2
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com