What was the name of the ancient time-watching disk?
Carving leakage is an instrument to measure time by the amount of water and sand dripping. According to the flowing medium, it can be divided into water leakage and hourglass. The date of the invention can no longer be verified, and the earliest record was found in Zhou Li. The oldest missing sculpture unearthed is a relic of the Western Han Dynasty. Three pieces have been found, which were unearthed in Mancheng, Hebei Province, Yike Zhaomeng, Inner Mongolia and Xingping, Shaanxi Province.
Missed arrows are also called missed arrows because they are engraved with symbols to indicate time. It consists of a clepsydra and a ruler. The clepsydra is used to drain or hold water. The former is called drainage clepsydra and the latter is called water receiving clepsydra. This ruler is used for timing. When in use, it is placed in a pot and moves up and down with the change of water level in the pot. In the early days, a single leaky pot was used, and then a multi-stage leaky carving device was created. The so-called multi-stage leaky carving means that multiple leaky pots are connected in series from top to bottom, and each leaky pot drips water into its next leaky pot in turn, so that the timing is more accurate.
Sundial: The history of human using sundial is very long. It was used in ancient Babylon 6,000 years ago, and in China it was the Zhou Dynasty more than 3,000 years ago. It usually consists of a copper pointer and a stone disk. The copper pointer is called "pointer", which passes through the center of the disk vertically and acts as a neutral rod in the standard table. There are scales on both sides of the coffin. Molecules, Ugliness, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai have twelve hours, and each hour is divided into "the beginning of the time" and "the right time", and a day is exactly 24 hours. The sundial can display not only the time of day, but also the solar terms and months.
Mechanical clock: a mechanical timer made by ancient Greeks in BC, which consists of dozens of interlocking copper gears and multiple dials. The first European mechanical clock introduced into China was in the Wanli period of the Ming Dynasty. During the Northern Song Dynasty, China made a water transport platform with gears running, imitating the cycle of the sun, the moon and the stars. It was built in Kaifeng 1086 in the Northern Song Dynasty, and the mechanical clock was driven by dripping water. /kloc-In the 5th century, Germany made the world's first portable timer and invented the clock mechanism. Later, the mechanical clock was fitted with a clock face and hands, which described the time intuitively for the first time. Soon after, a mechanical clock that can automatically tell the time appeared.