Foucault's pendulum which demonstrated the Earth's rotation and the concept of inertia, c1895. Artist: Unknown

Foucault's pendulum which demonstrated the Earth's rotation and the concept of inertia, c1895. Artist: Unknown

1-152-002 - Ann Ronan Picture Library/Heritage-Images

Foucault's pendulum which demonstrated both the rotation of the Earth and the concept of inertia, c1895.

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