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Note that while the Pendulum seems to change its path during the day -- actually it is the floor beneath it that changes, being twisted around by the daily rotation of earth. |
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Click the times below to see how the direction
of the pendulum's line of swing changes in relation to the floor.
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| At San Francisco latitude, the floor turns about 220º under the pendulum in about 24 hours (at North Pole, it would turn a full circle 360º) |
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