Wood Sand Pendulum 22"
Product Code: 7454
Our Price: $59.95
Description
This simple device with elegant physics consists of a metal pendulum suspended from an executive wooden stand, and can be used to demonstrate that the Earth does, indeed, rotate. Perfect for the procrastinating professional. gently inscribing beautiful Lissajous patterns in the sand. It was first used in the Han dynasty China as an early seismometer, then studied in depth by Galileo. Their crowning moment came in 1851, when Jean Bernard L?on Foucault used a pendulum suspended from the dome of the Panthenon in Paris that was free to pivot to demonstrate the rotation of the Earth.
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