Vacuum

Vacuum is a physical quantity that describes the difference between the actual pressure in a system and the pressure that would be in the same system under normal conditions. It is the degree to which the pressure in the system is lower than normal atmospheric pressure.

Negative pressure is created when the pressure inside a closed system is lower than the atmospheric pressure outside. It can be the result of a variety of factors and processes, such as gas or liquid suction, vacuuming, compression, or simply changing the air in an enclosed space.

Vacuum is often used in various fields and applications. For example, in vacuum systems, a negative pressure is created to reduce the pressure inside and create a space with a minimum amount of gas or the complete removal of atmospheric pressure. This is used in fields like physics, electronics, chemical industry, medicine and others.

Vacuum is also used in various devices and systems for the extraction of liquids or gases, such as vacuum cleaners, pumps, vacuum chambers and the like. In this way, a negative pressure is created inside the system and allows the movement of liquids or gas towards the device.

It is important to remember that negative pressure can have certain consequences. For example, creating a negative pressure inside a closed system can cause deformation or collapse of the walls if they are not strong enough. It is also necessary to pay attention to safety and properly control the vacuum to prevent possible problems or damage to the system or personal injury.