That big grandfather clock in the library might be an impressive piece of mechanical ingenuity, and an even better example of fine cabinetry, but we’d expect that the accuracy of a pendulum ...

Pendulum clocks aren’t used quite as often these days as their cumbersome mechanics and timekeeping abilities have long been outshone by electronic alternatives. However, they’re still fun and ...

Enhancing the display's mesmerizing allure is a brass Foucault pendulum hanging five stories — about 70 feet — down from the center of the clock, which swings based on Earth's rotation.