How lasers work (in theory)

How does a laser really work? It's Bose - Einstein statistics! (photons are bosons)

Check out Smarter Every Day's video showing lasers in real life: http://bit.ly/uBwhU2

Trying out a new feature: English Transcript! Let me know how it works

Tweet it - http://bit.ly/uZchvb
Facebook it - http://on.fb.me/u4Yfvr

minutephysics is now on Google+ - http://bit.ly/qzEwc6
...
https://www.youtube.com/watch?v=y3SBSbsdiYg