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Did Usain Bolt REALLY run 100m in 9.63 seconds?

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Published on Aug 6, 2012

Usain Bolt won gold in the 100m sprint at the London Olympics, clocking 9.63 seconds... but Albert Einstein has something to say about all this?

Featuring Tony Padilla - http://twitter.com/DrTonyPadilla

Website: http://www.numberphile.com/
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Videos by Brady Haran

Brady's other channels include:
http://www.youtube.com/periodicvideos (Chemistry stuff)
http://www.youtube.com/sixtysymbols (Physics and astronomy)
http://www.youtube.com/DeepSkyVideos (Space stuff)
http://www.youtube.com/nottinghamscience (Science and behind the scenes)
http://www.youtube.com/foodskey (Food science)
http://www.youtube.com/BackstageScience (Big science facilities)
http://www.youtube.com/favscientist (Favourite scientists)
http://www.youtube.com/bibledex (Academic look at the Bible)
http://www.youtube.com/wordsoftheworld (Modern language and culture)
http://www.youtube.com/PhilosophyFile (Philosophy stuff)

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