So How Exactly Are Lasers Created?

So How Exactly Are Lasers Created?


beam of light

As EngineerGuy Bill Hammack explains, it involves trapping light inside a specific medium, between a couple of mirrors, until the waves (or particles) all line up and escape through a pinhole opening. When they leave, it’s kind of like soldiers marching in single file, which creates that incredibly intense beam that’s been harnessed for endless applications since the first laser was created way back in 1960. [YouTube]