It’s pi day! Hank explains why this irrational number is important to scientists, and discusses a bit of a controversy that surrounds it.
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids?
Tardigrade Poster: http://vid.io/xom
SciShow Mug: http://vid.io/xoa
SciShow Shirt: http://vid.io/xog
—
SciShow elsewhere on the internet:
http://www.facebook.com/scishow
http://www.twitter.com/scishow
http://scishow.tumblr.com
Vi Hart’s video on τ: http://www.youtube.com/watch?v=jG7vhMMXagQ