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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.


Vystavil Luboš Motl v 8:05 PM | |

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reader Unknown said...

Here's another along the same line.

http://www.youtube.com/watch?v=zV6aQbnHSRo&feature=player_embedded#t=140

Sep 15, 2009, 6:30:00 PM ...


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