A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 0.5 Hz. == Principles == A pendulum is a weight suspended from a pivot so that it can swing freely.
A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 0.5 Hz. == Principles == A pendulum is a weight suspended from a pivot so that it can swing freely.
Source: Wikipedia "Seconds pendulum" · CC BY-SA 4.0
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