Art Unwin wrote:
Cecil there you go again with the idea that zero mass and zero energy
is something that can exist which some have termed as "photons"
Point to the laws of nature that support that notion.

It's part of the standard model, Art, with which I am
not about to disagree.

http://en.wikipedia.org/wiki/Standard_Model
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com