In the 16th century, monks in northern Italy began to build bell towers (or bell towers) to remind people of the time to pray.
in the 16th century, there began to be desk clocks in Germany. Those clocks have only one hand, and the clock face is divided into four parts, so that the time is accurate to the nearest 15 minutes.
in the 17th century, pendulums and laws gradually appeared. The accuracy of its operation has been greatly improved. Giovanni de Dante is known as the father of clocks in Europe. It took him 16 years to make a fully functional clock, called the cosmic armillary sphere, which can show the trajectories of some planets in the sky, and can also reflect religious festivals and the time of day. It began to be used in 1364. The clock made by Dante is not the first clock in Europe. It is said that the first clock that can tell the time in Europe was made in Milan in 1335.
in p>1657, huygens discovered that the frequency of pendulum can calculate time, and made the first pendulum clock. In 167, an Englishman, William Clement, invented the anchor escapement.
In p>1695, Tom Ping of England invented the I-wheel escapement. Later, Graham of the same country invented the static escapement.
from p>1728 to 1759, the nautical clock came out.
in p>1765, the free anchor escapement was born.
In p>1797, Eli Terry, an American, obtained a patent for a clock. He is regarded as the ancestor of American watch industry.
in p>184, British watchmaker bain invented the electric clock.
In p>1946, American physicist Dr. Libby figured out the principle of atomic clock. Two years later, the world's first atomic clock was created, and the atomic clock is still the most advanced clock. Its operation is completed by the natural vibration of cesium and ammonia atoms, and it can operate accurately within 3 years with very small error.
from 18th to 19th century, watch manufacturing industry gradually implemented industrial production.