Let's give him at least another day.
LoveDemBurningLAZERZ, Look up some more information WITH your dad. (i.e. How do lasers work, Laser safety checklist etc.)
Chances are he will understand a bit more than you, and may catch something you didn't. It's good that you're asking and not
just doing, but all of the questions you have asked have already been answered online. I'm not trying to discourage you from
asking questions, but look it up first. That way, you'll have your answer faster, and you won't have a bunch of angry vets getting
on you about searching first
.