Posted: Sep 15, 2011 6:43 pm
by Zwaarddijk
Grace wrote:Hmm... I don't think particles can travel the speed of light. I thought light was radioactive atoms like radioactive hydrogen that gives off its own light.

uh what? Light can be generated by radioactive atoms, yes, but light does not need that. Light consists of photons - a kind of particle that mostly travels at the speed of light on account of not having any mass. But uh, light gives off light sounds about par for the course when talking to you.