EVERYDAY SCIENCE

Detailed explanation-1: -Standard pressure supports 760 millimeters in a mercurial barometer (760 mmHg) or 760 torr . This is about 29.9 inches of mercury, and represents approximately 14.7 pounds per inch (14.7 lb/in2).

Detailed explanation-2: -Definitions of standard pressure. a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade. synonyms: atm, atmosphere, standard atmosphere.

Detailed explanation-3: -A standard atmosphere, abbreviated atm, is the unit of pressure equal to the average atmospheric pressure at sea level. Specifically 1 atm = 101, 325 pascals, which is the SI unit of pressure.

Detailed explanation-4: -The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa. It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth’s average atmospheric pressure at sea level.