### Possible Answer

Standard atmospheric pressure . The standard atmosphere (symbol: atm) is a unit of pressure equal to 101325 Pa or 1013.25 millibars or hectopascals. - read more

Atmospheric pressure at sea level is the result of the force of gravity on the matter above sea level ... or 14.696 psi (pounds per square inch). This means that, at sea level, the weight of air pressing on every square inch of something is almost 15 pounds. Something to think about: ... - read more

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