Baez has a lot of cool stuff on his site. Whenever someone asks me "What happens when a flashlight is traveling at the speed of light and you turn it on?" (this

Baez has a lot of cool stuff on his site. Whenever someone asks me "What happens when a flashlight is traveling at the speed of light and you turn it on?" (this happens more than you might think) I refer him to this page: http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/headlights.html http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLigh...