The problem of the rotation time of the earth, the error of the rotation time of the earth

You are so smart, tell you about it and you will understand: the earth starts to rotate 360 degrees from the time you are facing the sun, and at the same time revolves about 1 degree around the sun, you are no longer facing the sun, 23 hours, 56 minutes and 4 seconds is the time for the earth to rotate 360 degrees in the strict sense, in fact, you rotate a little more than 360 from this noon to the next noon.

The question of time difference you mentioned can be understood in this way: Assuming that the earth does not rotate and the light rotates, now China is facing the sun in broad daylight, and after the earth has rotated for more than 150 days (about half a year), has it run to the other side of the sun? The sun shines on the other side of the globe in Argentina, China has become night, Argentina has become day, so the sky in China is dark, yes.

The two cycles of the Earth's rotation, the solar day - 24 hours, the sidereal day - 23 hours, 56 minutes and 6 seconds. Where the true period of the Earth's rotation is 1 sidereal day. Their differences are shown below.

The Earth rotates from west to east on its axis of rotation, rotating counterclockwise from the North Pole and clockwise from the South Pole. The rotation of the earth is an important form of motion of the earth, the average angular velocity of rotation is radian seconds, the linear velocity of rotation at the equator of the earth is 465 meters and seconds, and the angular velocity of any point on the earth is 15° except for the poles. In general, the rotation of the earth is uniform.

However, precise astronomical observations have shown that there are three different variations in the Earth's rotation. o(∩_o...

You forgot to consider the angle of rotation of the Earth.

Because we use the solar day instead of the sidereal day. A solar day is equal to the time it takes for the Sun to pass the highest point in the sky twice in a row at the same location (24 hours), and a sidereal day is equal to the time it takes for a particular star at the same location to pass the highest point in the sky twice in a row (i.e., the time of the Earth's rotation, which is 23 hours, 56 minutes, and 4 years). The difference between the two is 3 minutes and 56 seconds.

The reason for the difference is that after the earth has rotated for 1,365 years at the same time as it has rotated once, then after the earth has made a full revolution, the sun will not return to the highest point of the same place (fiddling with the globe will understand), but the earth must turn another 1,365 arcs to make the sun return to the highest point of the same place again. That is, each time the Earth needs to rotate 2 (1+1 365) arcs for the Sun to pass the same altitude at the same place again. This increased time of 1 365 in 24 hours, is exactly equal to 3 minutes and 56 seconds.

The reason why we can't feel this time difference is because the most sensitive celestial body of human beings is the sun, and as long as the sun comes to the same place again, we naturally feel that it is exactly one day, and as for the fact that the earth has actually rotated 1,365 times more during this time, it is difficult for human beings to feel it.

However, astronomers who have been observing distant stars for a long time can still find that the time for stars to appear in the same position is 2 hours earlier each month, and the star that appears in the east in the spring evening may appear in the west, in the fall, and that it can be seen in the east the following spring night.

Four years run once a year (365 days, 5:48:46 seconds), four years later, the remaining time is 23:15:4 seconds, the number of days becomes 366 days, so the time is added by 44 minutes and 56 seconds (3 4 time difference 4 seconds), if there are 100 leap years in 400 years, then the time is added by 3 4 * 100 hours - 4 * 100 seconds (3 days, 2 hours, 53 minutes and 20 seconds), so there are 97 leap years in 400 years, which is only a rough calculation.

Your question is interesting and worth looking into.

The period of rotation of the Earth is as follows:

The rotation period of the earth refers to the time it takes for the earth to make one revolution around its own axis, which is the time it takes for the earth to rotate one time. The length of the Earth's rotation period is 23 hours, 56 minutes and 4 seconds, which means that the Earth rotates once a day.

Extension: The length of the Earth's rotation period is determined by the Earth's rotation speed. The speed of rotation of the Earth is constantly changing, mainly affected by factors such as the shape of the Earth, the angle of inclination of the axis of rotation, and the atmospheric circulation of the Earth.

Due to these factors, the rotation speed of the Earth changes slightly from year to year, and hence the rotation period of the Earth also changes.

In addition to the earth's orange locust rotation cycle, the earth also has an important cycle, that is, the revolution period. The Earth's orbital period is the time it takes for the Earth to make one revolution around the Sun, which is the length of the year. The Earth's orbital cycle is about days, so there is an extra day every four years, and we need to make up for this gap through leap years.

The Earth's rotation and revolution have a very important impact on our daily lives. The Earth's rotation cycle determines our alternation of day and night, while the Earth's orbital cycle determines our seasonal changes and the length of daylight hours. At the same time, the Earth's self-circumferential rotation and orbital period also have an important impact on the research in astronomy and navigation.

In conclusion, the rotation period of the Earth is 23 hours, 56 minutes and 4 seconds, and the length of this period is determined by the rotation speed of the Earth. In addition to the Earth's rotation cycle, the Earth's rotation period is also one of the most important cycles, which has an important impact on our daily life and scientific research.

The rotation period of the Earth is 23 hours, 56 minutes and 4 seconds.

A rotational astronomical noun that refers to the time it takes for a celestial body to rotate around its axis of rotation. Typically, the rotation period is equal to the length of the sidereal day of that celestial body. For example, the dichotox, the alternation of day and night, and the length of day and night are all natural phenomena inherent in the earth, and although they all involve diurnal conditions, their causes are different.

The day-night cycle is a dynamic concept, mainly generated by the movement of the earth's rotation, because the light source comes from the sun, so the cycle of day-night cycle is a solar day, that is, 24 hours. The Earth's rotation period is 23 hours, 56 minutes, and 4 seconds, also known as a sidereal day, rather than 24 hours, because the Earth's rotation is also revolutionary, which causes the relative position of the Sun to the ground to change.

Introduction to Earth

The Earth's atmosphere is mainly made up of nitrogen and oxygen. The tropics receive more solar energy than the polar regions and redistribute it through atmospheric and oceanic circulation. Greenhouse gases also play an important role in regulating the surface temperature.

The climate of a region is determined not only by latitude but also by factors such as altitude and proximity to the region and the ocean. Severe weather such as tropical cyclones, thunderstorms, and heat waves often occur in a wide area and have a great impact on life.

The Earth's gravitational pull interacts with other objects in space, especially the Moon, which is the Earth's only natural satellite. It takes about a few days for the Earth to revolve around the Sun. The Earth's axis of rotation is tilted relative to its orbital plane, thus producing seasons on Earth.

The gravitational interaction between the Earth and the Moon causes tides that stabilize the direction of the Earth on its axis and gradually slow down its rotation.