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

Catching Kendama

Catching Kendama

Tadashi's back (for the final video in this mini series) demonstrating the Kendama and some angular momentum.

Tadashi Tokieda will be back on Numberphile soon.
Here's a playlist of his videos: http://bit.ly/tadashi_vids

Kendama also known as bilboquet or boliche or bolero.

Video by Brady Haran and Pete McPartlan (animations by Pete)

More physics at Sixty Symbols: https://www.youtube.com/user/sixtysymbols

74 is cracked

74 is cracked

The Fields Medal (with Cédric Villani)

The Fields Medal (with Cédric Villani)