The pressure exerted by the earths atmosphere; under standard conditions equal to 14.7 lb per sq in. (1.01 106 pascals) equivalent to the pressure exerted by a column of mercury 29.9 in. (76.0 cm) high.
The pressure exerted by the earths atmosphere; under standard conditions equal to 14.7 lb per sq in. (1.01 106 pascals) equivalent to the pressure exerted by a column of mercury 29.9 in. (76.0 cm) high.