What is the origin of alarm clock?

Eric Shashuwa, an Englishman, was a great inventor. 1788, he invented a mechanical alarm clock that affected the biological clock of the human brain.

Since then, life tools represented by alarm clocks have begun to sweep the world, and may continue from the 18th century to the 21st century. In fact, when we seek simplicity and convenience most, we have unconsciously formed a third-party force in our brains and even subjective thoughts, which can replace many human hands-on operations and behavioral processes.

An alarm clock is a kind of clock with an alarm device. It can not only indicate the time, but also send out sound signals or other signals according to people's predetermined time. The movement structure of alarm clock mainly includes mechanical and timely electronic.

Other types, such as transistor hairspring and tuning fork, are rarely used. They are called desktop alarm clocks that are usually placed on the table and travel alarm clocks that are mainly used for travel. The time error of daily mechanical alarm clock is generally within 120 seconds/day, while the time error of timely electronic alarm clock is generally within 0.2 seconds/day.

There are many kinds of alarm clocks, mechanical and timely. Since people invented it by using the principle of pendulum, it has become an indispensable item in people's lives.

Extended data

history

In ancient China, there were sundials, water bells, fire bells, copper pots dripping water and so on, which can only be regarded as ancient timepieces.

Without a clock that doesn't tick, it can't be called a clock 1090, Su Song, the prime minister of the Northern Song Dynasty, presided over the construction of a water transport instrument, which can tell the time and ring the bell. Its structure is almost the same as that of a clock, and it can be called the originator of the clock. There is only one second error every day. It has an escapement mechanism that can make a ticking sound when it works.

This is the difference between a clock and a timer. The international watch industry regards the escapement as the heart of the watch. In Switzerland, an authoritative work in the world clock industry wrote: "The escapement mechanism used in modern mechanical clocks originated from the invention of Su Song in ancient China." Su Song, a scientist in the Song Dynasty, invented the Celestial Sphere written by Joseph Needham, a famous British historian of science and technology.

Record: "Su Song has been completely successful in principle since he combined horological machinery with astronomical observation instruments. He was 600 years ahead of robert hooke. For example, he, Fei and Hu are considered to be the inventors of the western astronomical clock for seven and a half centuries. "

12 century later, China's clock technology was introduced to Europe, and European talents made clocks. It can be said that China people created the history of human clocks and watches, and also influenced the progress of western clocks and watches later.

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