Comments by "Scott Franco" (@scottfranco1962) on "Why Time is One of Humanity's Greatest Inventions" video.

  1. Correct. Spring driven clocks existed, but the spring changed the amount of force it had as it unwound. The answer was a new type of escapement that relied on the mass of a wheel in the watch turning left, then right, then left again, etc. You can still see this escapement at work in most mechanical watches.
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