Light some interesting questions and an observation

[trogan]

For animations/simulations of electromagnetic fields you can try http://www.vectorfields.com/".

 

[trogan]

7. Where does it end up ?
Tony

It seems to me that, unless absorbed by a particle, light will end up at the edge of the universe. Could it then be converted to space thus causing the expansion of the universe ? (and incidentally indicating that space is base state energy). Thus the breakdown of matter would be fueling the expansion of the universe. Which would be increasing over time if the number of stars in the universe is increasing.

Actaully, it seems better to say that the light is converted into an expansion force that is applied to the edge of the universe and this is the way the universe expands.