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The list of the hints
- Biographies of Eotvos and Foucault
- The story about what made Eötvös do research on this topic
- The concept of weight
- Ship in the sea
- Motion in a rotating frame of reference
- How to make a Foucault-pendulum (animation)
- The velocity of an object travelling at the equator
- The magnitude of centrifugal force at different latitudes
- A calculator to work out the change in weight
- A link to a simulation on resonance
- The simulation of the working equipment
- An external link to a classic educational film about the operating equipment
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