Small experiments and principles about atmospheric pressure

The small experiments and principles about atmospheric pressure are introduced as follows:

The principle of the egg-eating bottle experiment: Because of the existence of atmospheric pressure, when the air in the bottle becomes less and less, the outside world Atmospheric pressure will press the eggs in.

Experiment:

1. Peel off the shells of cooked eggs.

2. Tear the paper into long strips.

3. Throw the lit note into the bottle.

4. After the fire in the bottle goes out, immediately put the egg into the mouth of the bottle, then remove your hand. The egg will slowly be sucked into the bottle and fall into the bottle.

Atmospheric pressure is the abbreviation of atmospheric pressure. It is the atmospheric pressure acting on a unit area, which is equal to the weight of a vertical air column extending upward to the upper boundary of the atmosphere per unit area. The size of air pressure is related to conditions such as altitude and temperature. Generally decreases with height. In the horizontal direction, differences in atmospheric pressure cause the flow of air.

A unit that represents air pressure. It is customary to use the height of the mercury column. For example, a standard atmospheric pressure is equal to the pressure generated by a 760 mm high mercury column, which is equivalent to the atmospheric pressure of 1.0336 kilograms on a square centimeter area. Internationally, it is uniformly stipulated that "hectopascal" is used as the unit of air pressure. After conversion: One standard atmospheric pressure = 1013 hectopascals (millibar). ?

Atmospheric pressure refers to the weight of the atmospheric column per unit area. Meteorologically, it is often expressed in millibars or millimeters of the height of the mercury column. A standard atmospheric pressure is 1013.2 millibars, or equivalent to a column of mercury 760 millimeters high. Because the higher you are from the ground, the lower the air pressure, so the height can be measured based on the change in air pressure in the vertical direction. In the horizontal direction, differences in air pressure can cause air flow, so it is one of the important meteorological factors in analyzing weather forecasts.