Laser

That's thew lamest explanation of a laser. How about some quantum physics?

Great vid, but ill be honest - im still struggling to understand it.

The girl from the sofa is so pretty :)

BTW, good video, great explanation

If you dont like it then don't watch it. not everything is for your entertainment. this stuff is for the benefit of the kids out there.

Lame LOL.

Science is for nerds. Normal kids want role models like sports stars and musicians, not dweebs who like learning about lasers.

Stop trying to make science 'accessible' - we know what science is, and we still think it sucks. Go and do your weird experiments, invent some crazy new thing, get rich, but leave Youtube alone.

You don't belong here.

The 'nerds' are the future of tomorrow, and will make progress for society. they'll actually contribute something, whereas you'll be serving fries until you're 65, living off of society like a useless lump.

In the words of the great Judge Smails...

"Well son, the world needs ditch diggers, too."

Don't worry. Your future is safe. You will be owned by nerds...who invent stuff like YouTube and everything that makes your useless shell of a life "meaningful".

Musicians like lasers....after all everyone loves laser light shows....you're silly thinking that everyone like sports stars. Sports Stars are boring, they act like every other "sports star" out there and they all look the same too.