Transcription: The pendulum is both the simplest and the most ingenious of time regulation mechanisms. The secret of the pendulum is that whatever distance it swings within its arc, whether it's the original maximum distance or the shorter distance when losing momentum, it will still take the same length of time to complete the journey. And the longer the shaft, the longer the journey, and of course, the longer the time. It was this strange characteristic of the pendulum that made it the ideal regulator for clock mechanisms. And apart from electric and electronic clocks, the pendulum is still included in the ...
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