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The average pressure at mean sea level in the International Standard Atmosphere is 1,013.25 hPa, or 1 atmosphere (atm), or 29.92 inches of mercury. Pressure (P), mass (m), and acceleration due to gravity (g) are related by P = F/A = (m*g)/A, where A is the surface area.
This is a tabulated listing of the orders of magnitude in relation to pressure expressed in pascals. psi values, prefixed with + and -, denote values relative to Earth's sea level standard atmospheric pressure (psig); otherwise, psia is assumed. Radiation pressure of sunlight on a perfectly reflecting surface at the distance of the Earth. [20]
The technical atmosphere at is usually followed by an index character, depending on whether it is an absolute pressure (ata), a negative pressure (atu) or an overpressure (atü), such as prevails in tire pressure testers at service stations.
25 lis 2010 · The Standard Atmospheric Pressure is defined at sea-level at 273 o K (0 o C) and is 1.01325 bar or 101325 Pa (absolute) . The temperature of 293 o K (20 o C) is sometimes used. In imperial units the Standard Atmospheric Pressure is 14.696 psi. 1 atm = 1.01325 bar = 101.3 kPa = 1.013 10 5 Pa = 14.696 psi (lb f /in 2)= 760 mmHg =10.33 mH 2 O ...
The millibar is a convenient unit for meteorologists because the average atmospheric pressure at sea level on Earth is 1.013 x 10 5 Pa = 1013 mb = 1 atm. Using the equations derived when considering pressure at a depth in a fluid, pressure can also be measured as millimeters or inches of mercury.
11 lis 2024 · Our calculator makes it simple to convert one unit of pressure to another, including ATM pressure units and other common measurements of pressure. To use the pressure unit conversion calculator, simply type in an input value and select the input units box to select a pressure unit of measure.
9 wrz 2021 · psi to atm Formula. The formula for converting psi to atm is: atm = psi ÷ 14.696. or. atm = psi ÷ 14.7. Which formula you use depends on how many significant digits you’re carrying in your calculations. psi to atm Example Problem. For example, convert 65 psi to atm: atm = (psi) ÷ (14.7 atm/psi) = 65 ÷ 14.7 = 4.4. 65 psi equals 4.4 atm.
