Sunday, March 7, 2021

507 Mechanical Movements

Your 1868 guide on how to transfer linear motion to rotary motion, pulleys, gears, and so on.  Many have animations.

http://507movements.com

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Basic Principles of Frequency Modulation (1944)

War Department video on why the military needs FM instead of AM. https://www.youtube.com/watch?v=AzvxefRDT84