The clock’s quartz movement kept time accurately, and the pendulum added a nice touch of tradition. However, we noticed that the clock’s materials were not the most durable, and the pendulum ...

From its initial development in the 17th century until the invention of quartz timepieces in the 1920s, pendulum clocks became staples of household life, enabling people to organize their ...

Without the pendulum clock, the Industrial Revolution doesn’t happen. Without the quartz clock, the technology in the digital revolution doesn’t happen. It’s time, weirdly enough ...

The pendulum proved to be the key to boosting ... current [see illustration in box on opposite page]. The first quartz clocks installed at the Royal Observatory in 1939 varied by only two ...

The pendulum proved to be the key to boosting ... by an electric current [see second graphic above]. The first quartz clocks installed at the Royal Observatory in 1939 varied by only two ...

Like most Pontiac models of that era, the Firebird's electro-mechanical clock contained a small set of electric contact points that mechanically wound the pendulum spring. Over the years ...

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 ...