Reinventing the magic log wheel: How was this missed for 400 years?

From Mathologer. Today is about reinventing a really cool mathematical wheel and its many different slide rule incarnations, just using a rubber band. 00:00 Intro 04:40 Multiply! 06:02 Pi times e 07:15 Divide! 08:39 Sliding rules 10:53 Apollo 11:08 Star Trek 11:45 Rubber band proof 13:13 Logarithms 16:50 Dmitry’s wheel 17:48 Thank you! This video…