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Hello there.

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

Perplexing Paperclips

Perplexing Paperclips

Featuring Tadashi Tokieda.

Part 2: https://youtu.be/iObpxBfOLv4

More Tadashi videos: http://bit.ly/tadashi_vids

Raw paperclips slow motions: https://youtu.be/zuX5yy_93JA

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

Spinning Tubes with Tadashi: https://youtu.be/JuuYFt8bahE

Partitions

Partitions

Magic Square Party Trick

Magic Square Party Trick