A lot of 40s videos are so well balanced between basic tangible ideas to full de... | Hacker News

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agumonkey on Dec 26, 2020 | parent | context | favorite | on: 1937 film explains how a car differential works

A lot of 40s videos are so well balanced between basic tangible ideas to full device.

- differentials

- fluid based car transmission

- navy canon driver based on analog computers

- wave principles (using super cute appartus to show impedance)

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