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The standard atmosphere (symbol: atm) is a unit of pressure defined as 101 325 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.
The atmosphere of Earth is the layer of gases, known collectively as air, retained by Earth's gravity that surrounds the planet and forms its planetary atmosphere.
An atmosphere (from Ancient Greek ἀτμός (atmós) 'vapour, steam', and σφαῖρα (sphaîra) 'sphere') is a layer of gasses that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low.
The standard atmosphere (symbol: atm) is a unit of atmospheric pressure that refers to the air pressure at sea level. It is defined as equal to 101325 Pa. Since 1982, it has been replaced by the bar, which is equal to exactly 10 5 Pa. The usage of either unit is discouraged.
If air has a finite weight, Earth's atmosphere must have a maximum height. Pascal reasoned that if true, air pressure on a high mountain must be less than at a lower altitude. He lived near the Puy de Dôme mountain, 4,790 feet (1,460 m) tall, but his health was poor so could not climb it.
1086101 [4] Website. www .columbus .gov. Columbus ( / kəˈlʌmbəs /, kə-LUM-bəs) is the capital and most populous city of the U.S. state of Ohio. With a 2020 census population of 905,748, [10] it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest after Chicago, and the third-most populous U.S. state ...
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Atmosphere (unit) The standard atmosphere (symbol: atm) is a unit of atmospheric pressure. It refers to the air pressure at sea level and is defined as equal to 101,325 Pa. [1] Since 1982, it has been replaced by the bar, which is exactly 10 5 Pa. [2] The use of either unit is discouraged.
