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

The Drag Equation

The Drag Equation

Tom Crawford discusses drag - then we drop the Empire State Building and Eiffel Tower into the ocean...

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Find out more about Tom Crawford: https://tomrocksmaths.com/about/

More Tom videos on Numberphile: http://bit.ly/Crawford_Videos

Check out some raw slow motions from filming of this video: https://youtu.be/sLR-2sTu20g

Quasiperfect Numbers

Quasiperfect Numbers

Butterflies and Gyroids

Butterflies and Gyroids