Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa; 1,013.25 mbar), which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.
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What is atmospheric pressure in simple words?
That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. ... One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury.
What do you mean by atmosphere and atmospheric pressure?
(1) An atmosphere is a set of layers of gases present in our surrounding or other material body. These bodies are held in place by the gravity of that body. Atmospheric pressure is defined as force per unit area that is exterted by the weight of the air above that surface.
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