Simplicity In Complexity | Randall Munroe
Channel: World Economic Forum
Date: 08/08/2016

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 stupid-seeming questions, as sometimes they can lead you to a lot of fun places.

http://www.weforum.org/