Why does the earth rotate

Rotation and revolution.

In 1543, Copernicus first put forward the concept of the earth's rotation and revolution in its book "On the Motion of the Heavenly Bodies". Since then, numerous observations and experiments have proved that the Earth rotates from west to east while revolving around the Sun. In 1851, the French physicist Foucault successfully conducted a famous experiment (Foucault's pendulum test) in Paris to prove the rotation of the Earth.

The Earth's rotation period is about 23:56:4 seconds mean solar time, and the Earth's orbit is elliptical. The semi-major diameter of the orbit is 149597870 km, the eccentricity of the orbit is one sidereal year, the average speed of the orbit is kilometers per second, and the angle between the ecliptic and the equator (yellow-econus angle) is 23°27. The combination of the Earth's rotation and its orbital motion gives rise to the Earth's day-night cycle, the change of seasons, and the distinction of the five zones (tropical, north-south temperate, and north-south cold zones).

The rate at which the earth is white turning is uneven, with long-term variations, seasonal variations, and irregular variations. At the same time, due to the gravitational effects of the sun, moon and planets, as well as the various effects of the atmosphere, oceans and internal materials of the earth, the direction of the earth's axis of rotation in space and the earth's body will change, that is, precession and nutation, pole shift and yellow-red angle changes.

The earth was born to rotate, and now it continues the inertia of its formation.

The moon didn't rotate before, and it still is.

It's an unresolved issue, so don't dwell on it.

Anyway, what scientists can prove is that the Earth is rotating.

It is not clear whether the rotation of the Earth began in the first place or whether it began after what it had experienced.

But the fact that the earth is rotating does not mean that the earth itself is rotating.

Because these two points of emphasis are not the same.

The energy of the Earth's rotation comes from the Earth's interior.

What I do know is that our Earth's rotation is slowly slowing down and will eventually stop one day. At the same time, our moon, the moon, is also slowly moving away from us.

But don't worry too much, the time when these things end up happening is calculated in "100 million".

This needs to be consulted with the director of the galaxy. Just like why chickens lay eggs and incubate chickens, they should consult the head of the global village.

Why does the Earth rotate?

Almost all celestial bodies in the solar system, including asteroids, rotate according to the law of the right-hand rule, and the rotation of all or most celestial bodies is also the right-hand rule. Why? The predecessor of the solar system was a dense cloud, driven by a certain force that caused it to attract each other, and this accretion process made the density gradually larger, which accelerated the accretion process.

On the one hand, the centripetal accretion accumulation becomes the sun, and on the other hand, the gas gradually develops into a flattened shape, and in the process of development, the potential energy becomes kinetic energy, and finally the whole thing turns. At the beginning of the rotation, there are those who turn this way, and those who turn that way, after a certain direction prevails, they all become one direction, and this direction is the right-hand rule that is now discovered, and there may be other solar systems that are left-handed rules, but in our solar system it is the right-hand rule. The energy of the earth's rotation** is caused by the eventual transformation of material potential energy into kinetic energy, which ultimately means that the earth rotates on the one hand and rotates on the other.

In the universe, friction is almost non-existent, so if a movement is not stopped by an external force, it will move forever. (i.e. inertia).

"The earth is rotating" is not the same as "the earth is rotating", Kant Laplace about the rotation of the earth.

The "nebula hypothesis" that forces the Earth's interior misleads earth science. The earth doesn't turn for no reason, it has no power inside! The reason why the earth rotates once in 24 hours is that it orbits the sun at a speed of more than 100,000 kilometers per hour, and encounters the lateral thrust of the solar wind on the way, which produces a plasma westerly circulation in the upper atmosphere, which in turn pushes the westerly winds on the ground and the ocean currents that swell eastward, and then pushes the earth to rotate from west to east.

All the planets are rotating and revolving, and their energy is larger than that of the universe.

The friction of tides (including solid tides) causes the rotational energy of the planets to dissipate, slowing down the rotation and revolution until it stops. At this time, the expansion of the universe also stops and begins to contract, and time begins to flow backwards.

For example, all the planets in the solar system will crash into the sun when they stop orbiting.

Here's a cause of the Earth's rotation that can be applied to any planet.

There is a very authoritative theory that explains the rotation of the earth and the tilt of the earth's axis in this way:

In the early days of the earth, it was just an asteroid, relying on gravity to continuously capture foreign celestial bodies to strengthen itself, and foreign celestial bodies were moving at high speed relative to the earth, so the process of capture was a violent collision. The largest impact occurred 4.5 billion years ago, when a large asteroid hit the Earth from the side, causing the Earth to spin, and the material and asteroids that collided out formed the moon, and the crater left by the impact formed the ocean.

Without the Moon, the Earth would wobbly or even turn upside down. The gravitational pull of the Moon is the best stabilizer of the Earth's axis of rotation, pointing it near the North Star and keeping it at 66 degrees 34 minutes from the plane of rotation. So that the earth has four seasons in the year.

In the beginning, the earth rotated very fast, only 5 hours a day, and the deceleration effect of tidal friction became 24 hours a day. This is the story of the formation of the Earth's moon.

So, it is inertia that keeps it spinning, and tidal friction caused by gravitational force slows it down slowly.