model Cavendish balance is shown to demonstrate the setup of the Cavendish balance
experiment. Two small balls are connected to form a torsion balance. Two large
bowling balls are placed near these balls so that they can interact with them
model of the Cavendish balance set up for demonstration.
A real Cavendish balance is set up in the basement. A real-time image of this
setup can be sent to the classroom via closed circuit television. In Hoyt auditorium,
a laser beam bounced off a mirror attached to the wire in the torsion balance
is directed through a hole in the floor and can be projected onto the wall.
Over the span of a classperiod, students can observe the movement of the beam
and thus the change in the angle of the torsion balance.
close-up of the model.
of Cavendish balance, television, Cavendish balance, laser, mirrors, Hoyt
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This page was last updated on
Friday August 15, 2008 8:37 PM