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 ...

Would you believe a pendulum clock that can keep time accurately to within one second per year? If you answered “yes”, you’ve either never tried to regulate a pendulum clock yourself ...

The grandiose addition to the library was made possible by a $400,000 donation by Lucille Caudill Little, and was unveiled on ...

through the balance clock, down to the modern pendulum clocks and chronometers. There are many illustrations, and the various methods of compensating for temperature are described in plain non ...

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 ...