Download Video Secrets to measuring a piece of paper - Numberphile

When Cliff Stoll sets your homework, there's always an extra lesson.
More links & stuff in full description below ↓↓↓

More Cliff videos:
Cliff's Klein Bottles:

Numberphile is supported by the Mathematical Sciences Research Institute (MSRI):

We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science.