pendulum
The Academy kept the old Foucalt Pendulum (a device that helped prove that the Earth rotates).
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Uploaded on January 17, 2009
Taken on January 15, 2009
pendulum
The Academy kept the old Foucalt Pendulum (a device that helped prove that the Earth rotates).
194
views
0
faves
0
comments
Uploaded on January 17, 2009
Taken on January 15, 2009