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Pendulum Germany

Pendulums

https://en.wikipedia.org/wiki/Foucault_pendulum

https://video.search.yahoo.com/yhs/search?fr=yhs-pty-pty_maps&hsimp=yhs-pty_maps&hspart=pty&p=how+does+a+Foucault+pendulum+work+physics#action=close

https://animations.physics.unsw.edu.au/jw/foucault_pendulum.html