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Simplicity In Complexity | Randall Munroe
If everyone on earth aimed a laser pointer at the moon, would we see it change colour? Randall Munroe, creator of the webcomic xkcd, talks us through the laser light calculations – and concludes that we shouldn’t be afraid of asking stupidseeming questions, as sometimes they can lead you to a lot of fun places.
http://www.weforum.org/
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