This is only true if the objects involved in the collision are perfectly
rigid...which no objects are. Not even billiard balls, atoms or photons.

Sally

"G=EMC^2 Glazier" wrote in message
...
bouncing photons most people would throw the book at me. Any object
that bounces back has to come to a stop before rebounding. In my theory
this question need not be asked,and is the backbone of my theory.
Bert