standard atmospheres

What Is The Unit For Air Pressure?

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What Is The Unit For Air Pressure? Atmospheric pressure is expressed in several different systems of units: millimetres (or inches) of mercury, pounds per square inch (psi), dynes per square centimetre, millibars (mb), standard atmospheres, or kilopascals. What is the measuring unit of air? Atmosphere 1 atm in … … is equal to … SI

What Are The Two Main Measures Of Atmospheric Pressure?

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What Are The Two Main Measures Of Atmospheric Pressure? Because atmospheric pressure changes with distance above or below sea level, a barometer can also be used to measure altitude. There are two main types of barometers: mercury and aneroid. In the mercury barometer, atmospheric pressure balances a column of mercury, the height of which can