The Effect of Earth’s Rotation

1. It happens daylight and night.
2. It happens false revolution of celestial bodies, for example the circulation of the sun from East to west.
3. The bending of wind direction.

This corresponds with the contents of Buys Ballet’s law, that says:
1. Air moves from the maximum air pressure to region that has minimum air pressure.
2. In north hemisphere, the wind turns to the right and in south hemisphere to the left.

To be able to prove the motion of rotation is necessary done experiment. In the following are experiments that prove the presence of earth’s rotation.

1. Experiment With Falling Body

If you falls a body from a high place and the Earth does not rotate, the body will fall directly to the center point of the Earth. Because the Earth makes rotation then that body falls a little to the east from the center point of the Earth. Experiment with falling body is first time done by Benzenberg (1802).

2. Experiment by hanging Bullet in the Peak of Tower

If the Earth does not rotate, the bullet hung in the peak of tower will precisely fall in point B. Because all bodies on the Earth and its atmosphere follow to rotate, then rotational velocity at point A is larger than rotational velocity at point B. Body fallen from a point will follow rotational velocity of its origin place. So the bullet will also follow rotational velocity at point A. Meanwhile that bullet also through distance AB, tower has slided to east direction until A’. The distance of A-A’ is larger than B-B’ ,therefore bullet does not fall in B’ but in C that its location is to the east of point B’.