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Hello there.

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

Borromean Olympic Rings

Borromean Olympic Rings

We like the Olympic Rings - but we prefer Borromean Rings.

More knots: http://bit.ly/Knot-a-Phile

See Brady's chemistry rings video at periodicvideos: http://www.youtube.com/watch?v=k2tkfbc18Vw

This video features Professor John Hunton from the University of Leicester discussing higher linkages.

Thanks to Derek (1veritasium) for filming me in Green Park and Henry (minutephysics) for not fighting back!
1veritasium http://bit.ly/MrupzL
minutephysics http://bit.ly/Muh6CC

Did Usain Bolt REALLY run 100m in 9.63 seconds?

Did Usain Bolt REALLY run 100m in 9.63 seconds?

The Most Mathematical Flag

The Most Mathematical Flag