[guitarplayer1953]

Is that enough to light a light bulb?

[El Gato]

I have always thought that most of theoretical physics is nothing more than science fiction with an endowment. I may be slow but I do not understand how scientist can create fields of math to solve the imaginary problems they put forth.

Depends on how long it takes to expend that much energy. A joule is a watt-second. so that much energy would light a 1.89 watt LED for 10-7 seconds (0.0000001 seconds) Of course that's the energy of each proton, and their are lots of protons in the beast, even if the beam is really, really "thin".