a spring pendulum tester for demonstrating Foucault's pendulum principle.
If you know the daily rotation angle of the Foucault's pendulum at the latitude of your location, you can tilt the instrument by the latitude and rotate the oscillating surface by the same angle as the Foucault's pendulum.
This will demonstrate Foucault's principle of the pendulum.
購物車 / 產生報價單 
