It may be inferred from the passage that the Foucault pendulum is used for
checking the correctness of the Earth's rotation experimenting with new usages for a pendulum announcing the time of a day showing the Earth's rotation
It may be inferred from the passage that the Foucault pendulum is used forchecking the correctness of the Earth's rotation experimenting with new usages for a pendulum announcing the time of a day showing the Earth's rotation