The first clock appeared in the Northern Song Dynasty and was invented by Su Song.
In 1092, Su Song, the prime minister of the Northern Song Dynasty, presided over the construction of a water-borne instrument. This instrument could tell the time and the clock, and its structure was very similar to modern clocks. What's even more incredible is that the water transport instrument only has an error of 1 second per day, and it is also equipped with an escapement that makes a "tick, tick" sound when working.
Extended information
The development of clocks
From 140 to 100 BC, the ancient Greeks created an Olympic Games consisting of 30 to 70 gear systems timer.
From 78 AD to 139 AD in the Eastern Han Dynasty, Zhang Heng made a water-leak armillary sphere and used a gear system to connect the armillary image and the timing clepsydra. It was the earliest mechanical clock to appear.
In 1350, Dante of Italy manufactured the first mechanical striking tower clock with a simple structure, with a daily difference of 15 to 30 minutes, and the indicating mechanism only had an hour hand; from 1500 to 1510, Henleth of Germany First, a steel spring was used instead of a heavy hammer to create a small mechanical clock with a crown wheel escapement; around 1582, Galileo of Italy invented the gravity pendulum; in 1657, Huygens of the Netherlands introduced the gravity pendulum into a mechanical clock. Created the pendulum clock.
In 1660, the British Hooke invented the hairspring and replaced the crown wheel escapement with a retrograde escapement; in 1673, Huygens applied a speed regulator composed of a balance wheel and hairspring to a watch. On the portable clock; in 1675, Clement of England used a fork device to make the simplest anchor escapement, which has been used in simple pendulum wall clocks.
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