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 ...

[Stephen Hobley] has been experimenting with an electromagnetic pendulum in order to build himself a clock. Through the course of his experiments, he has learned quite a bit about how pendulums ...

Powered by one single pendulum clock, it provides a realistic image of the positions of the Sun, the Moon, the Earth and five other planets (Mercury, Venus, Mars, Jupiter and Saturn). The planets ...

A watch differs from a clock In its having a vibrating wheel instead of a vibrating pendulum ; and, as in a clock, gravity is always pulling the pendulum down to the bottom of its arc, which is ...