Is there an error in the speed of rotation of the earth, the speed of rotation of the earth

No, the Earth's rotation is slowing down.

Even if the Earth's rotation speed does not change, this is not true due to the precession of the Sun's perigee and the existence of the yellow-red angle.

The resistance is mainly the gravitational force, with a relatively simple equilibrium tide theory to explain, the tidal ellipsoid formed by the sea water is always pointed to the moon (temporarily ignoring the gravitational force of the sun), because the moon's rotation speed is much smaller than the earth's rotation speed, it can be approximated that the tidal ellipsoid is stationary, which is equivalent to the earth moving in a stationary water balloon, and the friction of this water ball is the main reason for the slowdown of the earth's rotation speed. In addition, since the universe is not a vacuum, the friction between space and the earth also exists.

As for the initial velocity of the Earth's rotation, it should be ** the rotation of the primitive solar system, when the Earth was formed, it inherited a part of the angular momentum from the original solar system nebula, and then, according to the conservation of angular momentum, in the process of the Earth's contraction, as the radius becomes smaller, the angular velocity continues to increase.

Since circular motion is not a uniform linear motion, there is a loss of energy."

If the earth is a rigid body and a standard sphere, in the process of circular motion, the centripetal force on the particle is always perpendicular to the direction of motion, and the work done is 0, and there will be no energy loss.

Yes, hundreds of millions of years ago, the Earth's rotation period was faster than it is now, with only 22 hours per rotation. The Earth's rotation has now been extended by almost two hours, and it is still slowing down. At the same time 100 million years from now, the sun will deviate from this mirror.

Since the circular motion does not belong to the uniform linear motion, there will be a loss of energy, and the earth's rotation energy** comes from the earth's interior, because there is evidence that the earth's interior is gradually cooling, so the energy that can provide the earth's rotation will gradually decrease, making the earth's rotation speed slower.

Personal opinion.

100 million years ago, if there was a watch and a mirror on Earth, the sun would have shone exactly on a mirror when it pointed to eight o'clock.

In 100 million years, the environment of this area will remain the same, and when the watch points to 8 o'clock, will the sun still shine in this mirror?

- The speed is relative, and the error is absolute--- is only small.

That's not called an error.

The Earth's rotation has been slowing down.

Humans just prescribe a unit.

Yes, the division of time itself is based on the rotation of the earth.

No, the Earth's rotation is slowing down.

It is possible to rotate in one circle for several hours, and later the moon slows down the Earth's autobiography, but the Moon is also far away from us, and the resistance to the Earth's rotation is also reduced.

The rotation speed of the Earth is 466 meters and seconds.

Earth is the third planet from the Sun and the only celestial body known to humans to nurture and support life. The Earth's surface is roughly a land mass of continents and islands. The remainder is covered by water, mostly oceans, bays, and other saltwater bodies, but also by lakes, rivers, and other freshwater bodies, which together make up the hydrosphere.

Most of the Earth's polar regions are covered in ice.

The geographical meaning of rotation is one of the roots of life on Earth. The eastern and western hemispheres alternate between day and night, the time difference between different places, the longitude is different, the local time is different, the world is divided into 24 time zones, each time zone adopts the ** meridian of the time zone, bias, the sun, moon and stars rise in the east and set in the west.

The Earth's rpm speed is kilometers per second.

The orbit of the Earth's revolution is elliptical, overlooking the Earth's right contour from the International Space Station. The rotation of the earth produces the diurnal variation of the earth, and the rotation of the earth and the existence of the yellow and red angles cause the alternation of the seasons.

The time it takes for the earth to revolve around the sun is the earth's orbital period, which is one "year". Because the sensitive period of the Sun's annual apparent motion is the same as the Earth's mesosphere rotation period, the Earth's rotation period can be measured by the Sun's annual apparent motion. Observers on Earth observe that the Sun passes through a certain point on the ecliptic continuously, that is, a "year", and the length of the "year" is also different due to the different reference points selected.

The commonly used periodic units are sidereal year and return year.

The average angular velocity of the Earth's rotation is in degrees and the linear velocity of rotation at the Earth's equator is 465 meters and seconds.

It takes 23 hours and 56 minutes for the Earth to rotate around the Earth, but in recent years the Earth's rotation period has been slowly increasing (i.e., slowly decreasing), resulting in the need to adjust the global timer.

Pole shift is the movement of the Earth's axis of rotation across the Earth's surface, which is measured by treating the Earth as a fixed and unchanging system of reference coordinates, Mount Xiaosui (the so-called Earth-centered, Earth-Collision-Center-Geostationary Coordinate System (ECEF)), which changes by only a few meters.

There are two main reasons for pole shift, one is the result of the deviation of the Earth's axis from the axis of inertia, with a period of about 14 months. The other is caused by the seasonal operation of the atmosphere, which has a period of one year. There are other secondary reasons, and the amplitude of the pole shift is generally not more than 15 meters.

As a result of the pole shift, the latitude and longitude of the Earth change.

Precession is the precession of the Earth's axis of rotation relative to stellar space. The position of the equinox, relative to the stars that are fixed on the celestial sphere, moves westward along the ecliptic.

Typically, the amount of movement per year is:", i.e. 1 ° per yearThis process is slow but adds up from year to year, with the complete precession going through 25,765 years (called Platonic years) and the equinox receding 360° on the ecliptic

Earth's rotation speed:

The Earth's rotation is an important form of motion of the Earth, with an average angular velocity of radian seconds and a linear velocity of 466 meters and seconds at the Earth's equator.

The position of the Earth's axis of rotation on the Earth's body is constantly changing, and this change is called the Earth's pole shift, referred to as pole shift. In 1765, L. Euler proved that if there were no external forces, the axis of rotation of the rigid Earth would oscillate freely around the axis of shape, with a period of 305 sidereal days.

Reasons for the change in the speed of the Earth's rotation:

The conductivity of minerals in the deepest part of the mantle is much higher than that of the rest of the underlying mantle, which may be an important reason for the periodic changes in the Earth's rotation speed. It takes 23 hours and 56 minutes for the Earth to rotate around and increases or decreases by 3 to 4 thousandths of a second every 10 years. But scientists don't know exactly why this change occurs in the rotation period.

In the study, the researchers simulated the environment of post-perovskite in the Earth's interior, that is, about 1.3 million standard atmospheres, 2500 degrees Celsius, and measured the conductivity of post-perovskite in this state, and found that the conductivity of post-perovskite layers is 10 to 1000 times that of other parts of the lower mantle.

The Earth rotates from west to east on its axis of rotation. The Earth's rotation is an important form of motion of the Earth, with an average angular velocity of radian seconds and a linear velocity of 466 meters and seconds at the Earth's equator.

The Sun captures the Earth in its motion, and the Earth produces revolution f and rotation f, and if the original Earth did not have a rotation, the Earth's orbital linear velocity f and the Earth's equatorial rotation linear velocity f are equal.

The linear velocity of the Earth's orbit (on average) is: kilometers in seconds = 107,280 kilometers and hours.

Earth's equatorial circumference: 40,076 km.

The initial rotation of the Earth is as follows:

One rotation of the Earth = equatorial circumference Equatorial linear velocity = 40,076 km 107,280 km Hours = hours.

In the past 100 million years, the sun captured the earth, the earth began to have sunlight, the geological period entered the Paleozoic era of the Phanerozoic, the glaciers melted, the biological world began to emerge explosively, and a large number of limestone appeared in the rock construction.

From the Earth's initial rotation of one hour, after hundreds of millions of years, the Earth's rotation is 24 hours, slowing down:

24 hours hours = hours = 83,880 seconds.

The rate of slowdown is: 83880 seconds 543000000 years = seconds years.

The average angular velocity of the Earth's rotation is in degrees and the linear velocity of rotation at the Earth's equator is 465 meters and seconds.

Except for the North and South Poles, the angular velocity of rotation at all points on Earth is 15° hours.

The linear velocity of the Earth's rotation, the equator is the maximum, and it becomes smaller and smaller from the equator to the poles, and the poles are zero.

It is known that the latitude of a point on the earth's surface is , the radius of the earth is r, and the linear velocity of the point is v, then v=2 rcos 24, if the altitude above a point on the ground (latitude is h) and the rotation velocity of the geostationary satellite is u, then u=2 (rcos +h) 24.

The linear velocity of the parallels with the latitude value of is v=1670cos km h.

The Earth's rotation speed is calculated, the Earth's equator is l=2 r=2 The circumference formula of the circle), the Earth's rotation is 24 hours, v=l t=40192km 24=Definition of velocity – distance divided by time), so the Earth's rotation speed is.

Direction: from west to east.

1) Looking down from the North Pole: Rotates in a counterclockwise direction.

2) Looking down from the sky over Antarctica: Rotate in a clockwise direction.

3) The direction in which the east longitude increases and the direction in which the west longitude decreases is the direction of the earth's rotation.