Imagine we are all cavemen without satellite technology and just discovered the Foucault pendulum! As we know the angle of presession depends on the latitude. This can be used to prove that the earth is rotating, right? Now by putting several Foucault pendula around the Earth, at equidistant longitude and latitude, can we prove that the Earth is a sphere as well?(adsbygoogle = window.adsbygoogle || []).push({});

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# I Foucault pendulum and a round globe

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