pi_circle.png

Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

Why 82,000 is an extraordinary number

Why 82,000 is an extraordinary number

Check out How Not To Be Wrong by Jordan Ellenberg: http://bit.ly/HowNotToBeWrong

And special Kindle offer: http://bit.ly/Wrong_Special

This video features Dr James Grime - http://singingbanana.com

Cheers to Thomas Oléron Evans for inspiring James:
http://www.mathistopheles.co.uk/maths/covering-all-the-bases/

Klein Bottles

Klein Bottles

Funny Fractions and Ford Circles

Funny Fractions and Ford Circles