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Military Patent Infringement (Pentagon takes your genius crap)

http://www.bloomberg.com/news/articles/2016-06-08/congratulations-your-genius-patent-is-now-a-military-secret

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Monday, September 7, 2020

Why is there no equation for the perimeter of an ellipse‽

 https://youtu.be/5nW3nJhBHL0

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