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Air is a name for the mixture of gases present in the Earth's atmosphere.


Compressed air is often used in scuba diving as a shallow water breathing gas and to inflate buoyancy devices. Compressed air is also used as a source of energy for pneumatic tools.


Air is one of the classical elements, and is associated with many other concepts, such as the sword suit in the tarot.


Air is a French electronic music duo. Their acclaimed first album Moon Safari was followed by the releases Premiers Symptomes, 10,000 Hz Legend, The Virgin Suicides film soundtrack and Talkie Walkie.


To air an audiovisual production means to broadcast it.


Air is also the name of a well-known renai game by Key.

PsychrometricsPsychrometrics is the measurement of the heat and water vapor properties of air. Psychrometry Psychrometry is the science and practice of air mixtures and their control. The science deals mainly with dry air, water vapor mixtures, with the specific heat o HVACHVAC is an initialism that stands for heating, ventilation, and air-conditioning . This is sometimes referred to as climate control . These three functions are closely interrelated, as they control the temperature and humidity of the air within the buildi



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