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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 ]
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.
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Pressure as a function of the height above the sea level. There are two equations for computing pressure as a function of height. The first equation is applicable to the atmospheric layers in which the temperature is assumed to vary with altitude at a non null lapse rate of : = [,, ()] ′, The second equation is applicable to the atmospheric layers in which the temperature is assumed not to ...
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. [107] [108] Lowest air pressure: 20 February 1907, Skagen 943.5 hPa. [107] Danish records both occurred within a month during the same winter, and same winter as Norwegian ...
North Central Coast (Bắc Trung Bộ) Hà Tĩnh Nghệ An Quảng Bình Quảng Trị Thanh Hóa Huế † 51,242.75 11,190,830 218.39 contains the coastal provinces in the northern half of Vietnam's narrow central part. They all stretch from the coast in the east to Laos in the west. South Central Coast (Duyên hải Nam Trung Bộ) Bình Định
Kien Trung Palace (Vietnamese: Điện Kiến Trung; chữ Hán:建中殿) is a palace within the Imperial City of Huế, the former imperial capital of Vietnam. It was the residence of the last two emperors of the Nguyễn dynasty. [1] It was destroyed by the Viet Minh in 1947 during the Indochina Wars. Reconstruction started in 2019 and was ...
The physics that affect the body in the sky or in space are different from the ground. For example, barometric pressure is different at different heights. At sea level barometric pressure is 760 mmHg; at 3,048 m above sea level, barometric pressure is 523 mmHg, and at 15,240 m, the barometric pressure is 87 mmHg.