state two measure of atmosphere
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Placing it on a dial allows the air pressure to be measured. The most common units for pressure in atmospheric science are inches of mercury (in of Hg), millibars (mb), pounds per square in (lbs/in2), and atmospheres (atms).
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Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. ... One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases. The atmosphere has some very important functions:
It has the oxygen that we need to breathe.
The atmosphere filters the Sun's rays. If there were no atmosphere, the Sun would burn us more.
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