The difference between earth’s rotation and revolution

2022-05-28 0 By

Rotation is the rotation of the earth on its axis. One rotation takes a day.Revolution is the earth around the sun as the center of the movement, one revolution is a year.1. The Rotation of the Earth also causes an object on earth moving horizontally in any direction to deviate from its original direction of motion.Based on the direction of the moving object, the horizontal object in the northern hemisphere tends to move to the right and the horizontal object in the southern hemisphere tends to move to the left.The deflection of the direction of motion of horizontal objects on the surface is caused by the fact that objects have inertia and try to maintain their speed and direction.As mentioned above, the horizontal direction of the earth is based on longitude and latitude, the direction of longitude is north and south, the direction of latitude is east and west.But because of the Earth’s rotation, longitude and latitude, which are the standard north-south and east-west directions, are deflected by the earth’s rotation.Thus, the horizontal motion of a body that really remains in the same direction, expressed in terms of the direction on earth, is deflected relative to it.2. The Earth is always rotating, because the rotation speed increases with the height, the object falling from a high point, must have a high rotation speed to the east, and inevitably fall in the east of the site.To prove this, tests have been carried out in very deep mines.The result is that objects falling from the center of the wellhead always collide with the eastern wall of the mine at a certain depth, confirming the rotation of the Earth from another side.Because the Earth’s orbit is elliptical, the distance between the Sun and the Earth changes constantly as the Earth moves around the sun.The point in the Earth’s orbit closest to the sun, the close end of the long axis of an elliptical orbit, is called perihelion.In modern times, earth’s perihelion passes around the beginning of January.At this point, the Earth is about 147,100,000 kilometers from the sun, often called the distance to the sun.The farthest point in earth’s orbit from the sun, the far end of the long axis of an elliptical orbit, is called aphelion.In modern times, earth passes aphelion around the beginning of July.At this point, the Earth is about 1.52,000,000 kilometers from the sun, which is often called the telhelion.The average of the heliospheric and perisolar distances is 149,600,000 km, which is the mean distance to the Sun and earth, or 1 AU.