File:Pendulum_clock_by_Jacob_Kock,_antique_furniture_photography,_IMG_0931_edit.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ376· pop 179· linked from 1,010 articles

clock

Also known as chronoscope, watch, timepiece

thumb|An analog pendulum clock made around 18th century

AI overview

A clock is a device that measures and displays time, like the 18th-century pendulum clock shown here. Clocks matter because they help people organize their daily activities and coordinate with others by providing a reliable way to know what time it is.

AI-generated from the Wikipedia summary — may contain errors.

~57 min read

Encyclopedic overview

44 sections

Contents

Etymology
History of time-measuring devices
Sundials
Devices that measure duration, elapsed time and intervals
Water clocks
Mechanical water clocks
Fully mechanical
Astronomical
Spring-driven
Pendulum
Hairspring
Marine chronometer
Mass production
Early electric
Quartz
Atomic
Operation
Power source
Oscillator
Synchronized or slave clocks
Controller
Counter chain
Indicator
Types
Time display methods
Analog
Digital
Hybrid (analog-digital)
Auditory
Word
Projection
Tactile
Multi-display
Purposes
Time standards
Navigation
Sports and games
Culture
Folklore and superstition
Specific types
Awards
Notes and references
Bibliography
External links

thumb|An analog pendulum clock made around 18th century

A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, and the year. Devices operating on several physical processes have been used over the millennia.

Excerpted from Wikipedia’s “clock” article, available under the CC BY-SA 4.0 licence.