Monday, September 14, 2009 ... Deutsch/Español/Related posts from blogosphere

Clifford Johnson: LASER

A pretty good, non-technical explanation how LASERs work. Well, the reason why the photons end up going in the same direction is slightly underexplained but the very idea of a particle physics choreography is neat.

Via Asymptotia.

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reader Ken said...

Here's another along the same line.