What is revolution and rotation? What is rotation vs. revolution

The rotation of a celestial body around another celestial body is called revolution.

Rotation refers to the motion of an object that rotates on its own, and the object rotates along an axis that passes through the body itself, which is called"Axis of rotation"。

The planets in the solar system revolve around the sun, or the moons of the planets revolve around the planets, which is called revolution. The earth revolves.

Revolutions are the cyclic motion of one object around another object, and is generally used to describe the activity of a planet around a star or a moon around a planet. The orbit can be a circle, an ellipse, a hyperbola, or a parabola.

The direction of the Earth's rotation is from west to east and left to right. It rotates counterclockwise from the north pole and clockwise from the south pole.

1. Revolution of the earth.

It refers to the earth revolution around the sun according to a certain orbit. Just as the rotation of the earth has its own unique regularity, the rotation of the earth due to the action of the sun's gravitational field and rotation also has its own laws.

The rotation of the earth follows the laws of the earth's orbit, the earth's orbital plane, the yellow-red angle, the period of the earth's revolution, the speed of the earth's revolution and the effect of the earth's revolution. The time it takes for the earth to revolve is one year. There are two distinct cycles in the process of the Earth's revolution, which are the return year and the sidereal year, and the time of the return year is not the same as the sidereal year.

The one-year time difference between the two is called precession.

2. Rotation of the earth.

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 Earth's axis of rotation is angled to the ecliptic plane, perpendicular to the equatorial plane.

The Earth's rotation is an important form of motion of the Earth, with an average angular velocity of rotation in degrees and a linear velocity of 465 meters and seconds at the Earth's equator. 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.

Speed 1, rotation speed.

The angular velocity of the Earth's rotation is about 15 degrees per hour; Whereas the linear velocity of each point of the surface varies with latitude and is the linear velocity of the equator multiplied by the cosine of latitude. Hence the linear velocity of the equator is the maximum, the linear velocity of the poles is the least, and the velocity of the equatorial line is about m s.

2. Revolution speed.

The average angular velocity is 360 degrees per year, or 59 minutes per day. The average speed is 940,000,000 kilometers per year, which is about kilometers per second.

Under the premise of conservation of energy, the closer to the sun, the smaller the potential energy, the greater the kinetic energy, the greater the immediate linear velocity and the immediate angular velocity. Under the premise of conservation of angular momentum, that is, the area swept by the line between the earth and the sun is a fixed value in the same length of time.

The above content reference.

Rotation refers to the motion of an object that rotates on its own, and the object rotates along an axis that traverses the object itself, which is known as the axis of rotation.

Revolution refers to the cyclic motion of an object along a certain orbit centered on another object, which can be a circle, ellipse, hyperbola or parabola.

Rotation is due to the gravitational force is proportional to the mass of the substance, under the action of gravitational force, the less mass begins to rotate around the place with more mass, and gradually forms the sun, planets and various celestial bodies, and has always maintained the initial angular momentum of the rotating body.

Angular momentum is related to the radius, mass, and linear velocity of a rotating body and satisfies the law of conservation of energy. It is precisely because of the wonderful law of "conservation of angular momentum" that all other planets and various celestial bodies today are self-rotating.

Revolution is the gravitational pull of the sun that causes the earth to revolve around the sun, and the centrifugal force of the revolution and the gravitational force of the sun balance so that the earth does not fall on the sun and burn up.

There are many differences between rotation and revolution, the main difference is rent: rotation is the rotation of the earth with the axis of rotation as the center, and one rotation is a day of regret. Revolution is the orbit of the earth centered on the sun, and one revolution is a year.

There are many differences between rotation and revolution, the main difference is: rotation is the earth's rotation movement centered on the axis of rotation, and one rotation is a day. Revolution is the orbit of the earth centered on the sun, and one revolution is a year.