Who invented time? To be detailed, thanks

Time exists objectively and does not need to be invented by man. The details are as follows: Ancient astronomers and physicists used sundials, sundials, water clocks, and pendulums to observe changes in the shadow of the sun or changes in water levels to keep time.

With the progress of science and technology, modern scientists have invented single pendulum clocks and quartz oscillators, which use the oscillation period of single pendulum or quartz crystals to keep time. However, the above-mentioned timing methods are easily affected by the environment, temperature, material, electromagnetic field and even the observer's observation angle, etc., and the stability is not good, and must be corrected by the cycle of the celestial body (the rotation of the earth, revolution, and the revolutions of the moon). Before 1960, CIPM (International Conference on Weights and Measures) was based on the Earth's rotation and defined a second as one 86,400th of an average solar day.

That is, 1 second = 1 86400 mean solar day, and its stability is about 10-8. 1960 In 1967, CIPM changed to the basis of the Earth's revolution and defined 1900 as the mean solar year. The second definition is changed to:

One second is one-tenth of an average solar year. 1 sec = 1 solar year at 1900, with a stability of about 10-9. The above is yes and the following is my personal opinion Time, like air, was not invented, it existed before it was known, the Egyptians or the ancient Babylonians invented the method of calculating time.

The scariest thing in the world is time......He is the strongest, he is the coldest, he gives everyone the same opportunity I feel that time stands still for me when I fall asleep because my brain seems to stop working and I don't think about anything anymore I only dream At this time time time I invented ... Strange, strange, really strange, I think, time is not invented by man, or time existed before man, earlier than the dinosaurs, I personally think that time may have "light" since the emergence of the universe, and time has begun to flow, time will not stop, because light will not disappear from the universe Of course, time is a very abstract thing, invisible, intangible, of course, I know very little knowledge, I think I should understand, although I don't have the ability yet...

Time is inherent, neither invented nor discovered. It's just that people gradually understand and use time in life and social practice, and then gradually quantify it in a certain way. If we have to say that it is an invention or a discovery, it can only be said that it is a discovery, and it can never be said that it is an invention.

Time exists objectively and does not need to be invented by man. As for who defines the second, of course, it is not an [individual].

Among the ancient timekeeping tools, the first to be produced was the watch. For a long time, people discovered that the shadow of the sun shining on trees would change, so people invented the obeki, which was to stand a straight pole on the ground and observe the change of its shadow to understand the time. The stone slab on which this pole is placed is Kei, and the pole is called a table.

Evolved from Omote-gyu is the sundial. The meaning of a sundial is the shadow of the sun. Compared with the watch, the sundial is more specific and complete, with specific scale markings.

The sundial is also a timekeeping tool that has been used in China for thousands of years. However, sundials also have disadvantages, according to the sun to observe and confirm the time, then when the rainy day, the sun is obscured by clouds and rain, the use of sundial timing is not very convenient.

So the sundial is based on the sun, and when the sun sets and the moon rises at night, how to keep the time? Therefore, people borrowed the principle of sundials and thought about whether they could use the changes of the moon at night to keep time, and moondials were born. However, compared to sundials, the disadvantages of moondials are more obvious.

Moondials can only correctly display the time when the moon is full and the moonlight is abundant, and other times there will be large errors, so more rigorous moondials are usually accompanied by an error note to guide people to correctly confirm the time.

In order to be able to keep the time correctly at any time, the ancients invented the missing engraving. The leakage is timed according to the principle of water equalization dripping. The leakage refers to the water dripping, and the engraving is the arrow engraved with a ruler.

Also according to the principle of water, Zhang Heng of the Eastern Han Dynasty invented the water transport armillary sphere, and the subsequent dynasties have improved on this basis and constantly improved the timing device.

In principle, the time is set at 12 o'clock at the time of the highest sun in the local area.

The current time setting is to divide the region into various time zones, define the time zone, use the time measured by the Greenwich Observatory as the standard time, and so on, and so on, to obtain the standard time that is currently in use.

It's a long story! In fact, the first person to invent the clock was not the first to "know" the time!

Su Song. In 1092, Su Song, the prime minister of the Northern Song Dynasty, presided over the construction of a water transport instrument elephant platform, which can tell the time and strike the clock, and the structure is very similar to modern clocks. With an error of only one second per day, the water transport platform is equipped with an escapement that makes a ticking sound while working.

Su Song: Su Song (December 10, 1020, June 18, 1101), Zirong, originally from Tong'an County, Quanzhou Prefecture, Fujian Province (now Tong'an District, Xiamen City), later migrated to Danyang, Runzhou. In the middle of the Northern Song Dynasty**, he was an outstanding astronomer, astronomical machine manufacturer, and pharmacist.

Su Song is studious, and he knows everything in the nine streams of the history of the Qing Dynasty and the theory of a hundred schools, as well as algorithms, geographies, mountain classics, materia medica, exegesis, and the law of the false oak. His main contribution is to science and technology, especially medicine and astronomy. He led the manufacture of the world's oldest astronomical clock, the "Water Transport Instrument Elephant Tower", which opened the precedent of modern clock escapements.

Known as "one of the greatest naturalists and scientists of ancient China and the Middle Ages."