Clock

Clock

Any instrument other than a watch for measuring or indicating time, especially a mechanical or electronic device having a numbered dial and moving hands or a digital display.

Industry: Chronometry

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Clock

White enameled dials were first introduced in England in the 1740s for watches, and for bracket clocks later in the 18th century. Enamel dials were more legible than the engraved and silvered type, ...

empire clock

Chronometry; Clock

The term 'American empire' applied to furnishings describes the style of c. 1825-40, which followed the Federal and preceded the Victorian. In clocks, this includes such types as bronze ...

emery wheel

Chronometry; Clock

A disc or wheel of artificial stone for grinding by machine. It is composed of emery grit bonded together, of even texture in various grades of fineness, and in various shapes and sizes. Rapidly ...

ellicott pendulum

Chronometry; Clock

Temperature errors, caused by expansion of the pendulum rod in heat slowing the clock's rate, led John Ellicott, probably after seeing John Harrison's gridiron compensation, to the idea of using ...

eight-day train

Chronometry; Clock

The timekeeping trains of clocks are designed to go for a little longer than the period required between windings. A clock designed to be wound weekly will go for eight days before stopping. The ...

eight-day clock

Chronometry; Clock

A clock that runs for eight days on one winding.

ecliptic

Chronometry; Clock

The plane of the Earth's orbit around the sun, passing through the center of the sun. Viewed from the Earth it is the apparent track of the sun throughout the year between the fixed stars. In a ...