How Lasers Work - A Short Explanation

Laser pointers, I've confiscated them from students and I'm sure that some of you have too. Some students love to play with them. But do they know how they work? Minute Physics offers a short explanation in the video that is embedded below.


Applications for Education
I know more than a few teachers who might make students watch a video like this one and have students create a short report about lasers after confiscating laser pointers from them.