How pi was almost 6.283185…

Happy pi day! Did you know that in some of his notes, Euler used the symbol pi to represent 6.28…, before the more familiar 3.14… took off as a standard?

Plushie creatures now available: http://3b1b.co/store
Why? Well, people asked, and what better way to celebrate pi day?

The idea for this video, as well as the live shots, came from Ben Hambrecht, with the writing and animating done by Grant Sanderson.

Special thanks to:
– University Library Basel, for letting us rummage through their historical collection
– Martin Mattmüller from the Bernoulli-Euler center for helpful discussion
– Michael Hartl, author of the Tau Manifesto, for pointing us to obscure references
– Library of the Institut de France

Cinematographer: Eugen Heller

Music by Vincent Rubinetti:
https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown

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3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe, and click the bell to receive notifications (if you’re into that).

If you are new to this channel and want to see more, a good place to start is this playlist: http://3b1b.co/recommended

Various social media stuffs:
Website: https://www.3blue1brown.com
Twitter: https://twitter.com/3Blue1Brown
Patreon: https://patreon.com/3blue1brown
Facebook: https://www.facebook.com/3blue1brown
Reddit: https://www.reddit.com/r/3Blue1Brown

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