Compressed air

All you want to know about Compressed air

Compressed air is air which is kept under a certain pressure, usually greater than that of the atmosphere.

A blast of air under 40 psi Pounds per square inch from 4 inches away can rupture an eardrum or cause brain damage.^{[citation needed]} Compressed air can be used in building, saving the pressure...
As little as 12 psi can pop an eyeball from its socket.^{[citation needed]}
Directed at the mouth, compressed air can rupture the lungs.^{[citation needed]}

Compressed air can be used in:

Pneumatics, the use of pressurized gases to do work. This includes compressed air vehicle propulsion and compressed air energy storage.
scuba diving, to inflate buoyancy devices. See also: Breathing gas
Compressed air can also be used for cooling using a vortex tube.
In gas dusters. It is then often called "Canned air", however this is more usually R134a.
In an air brake (rail) system
In an air brake (road vehicle) system
In an air brake (air vehicle) system
In a compressed air breather (such as Suisse Air)
Canned compressed air are useful for cleaning dusty computer components.

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