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.
How Apple Avoids Taxes Through R&D Spending
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In Washington, CEO Tim Cook defended Apple’s R&D cost sharing arrangements.
Apple CEO Tim Cook came under fire in Washington today at a U.S. Senate
heari...
6 hours ago
snail feedback (1) :
Here's another along the same line.
http://www.youtube.com/watch?v=zV6aQbnHSRo&feature=player_embedded#t=140
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