16BitTons

I remember feeling rather devastated when I found out that F<>MA and that energy and mass aren't really conserved. I think it was because I was trying to build a philosophy from studying physics, rather than just getting the equations down to pass the test.

Zed, I admire you immensely. Please don't feed the trolls.

>In fact, photons don't interact with each other at all.

They can. It's a non-classical concequence of Quantum Electrodynamics. If you are interested in the cross-sections, check out Berestetskii et al., 1982.