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Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa ), which is equivalent to 1,013.25 millibars , [ 1 ] 760 mm Hg , 29.9212 inches Hg , or 14.696 psi . [ 2 ]
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When atmospheric pressure is measured by a barometer, the pressure is also referred to as the "barometric pressure". Assume a barometer with a cross-sectional area A, a height h, filled with mercury from the bottom at Point B to the top at Point C. The pressure at the bottom of the barometer, Point B, is equal to the atmospheric pressure.
Châu Đốc is a city in An Giang Province, bordering Cambodia, in the Mekong Delta region of Vietnam.As of 2019, the city had a population of 101,765, and cover an area of 105.29 square kilometres (40.65 sq mi).
Comparison of a graph of International Standard Atmosphere temperature and pressure and approximate altitudes of various objects and successful stratospheric jumps The International Standard Atmosphere ( ISA ) is a static atmospheric model of how the pressure , temperature , density , and viscosity of the Earth's atmosphere change over a wide ...
In the bottom centre is the aneroid (large circular silver object). As the pressure increases, the aneroid is pushed down causing the arm to move up and leave a trace on the paper. As the pressure decreases, the spring lifts the aneroid and the arm moves down. After three days the drum to which the graph is attached is removed.
The Danish Meteorological Institute report record barometric pressure for Denmark (since 1874) as: Highest air pressure: 23 January 1907, Skagen and Copenhagen 1062.2 hPa. [106] [107] Lowest air pressure: 20 February 1907, Skagen 943.5 hPa. [106] Danish records both occurred within a month during the same winter, and same winter as Norwegian ...
Nguyễn Đình Chiểu was born in the southern province of Gia Định, the location of modern Saigon.He was of gentry parentage; his father was a native of Thừa Thiên–Huế, near Huế; but, during his service to the imperial government of Emperor Gia Long, he was posted south to serve under Lê Văn Duyệt, the governor of the south.