Question

What is the measurement atmospheric pressure at sea-level?

Answer 1

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Meteorologists use barometers to measure this atmospheric pressure (also called barometric pressure). At sea level the atmospheric pressure is approximately 1 kilogram per squarecentimeter (14.7 pounds per square inch), which will cause a column of mercury in a mercury barometer to rise760 millimeters (30.4 inches).

Answer 2

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atmosphere (atm)

(atm) unit of measurement equal to air pressure at sea level, about 14.7 pounds per square inch. Also called standard atmospheric pressure