How Do You Convert The Barometric Pressure With A Formula?
You may need to convert barometric pressure for a few reasons. One is to convert the pressure between altitudes. Another is to change the units of measurement. Barometric pressure is given in a variety of units such as bars and atmospheres. The ability to convert units can facilitate understanding. Take a barometric pressure measurement, P0, from a reference altitude. Define h as the distance, in meters, above the reference altitude at which you want to know the pressure. Note that h can have a negative value. Calculate the product mgh, where m is the (average) mass of an air molecule and g is the gravitational constant. Use 9.8 meters per second-squared for g and 4.8156×10^-26 kilograms for m, where the caret (^) denotes exponentiation. This equals 29 atomic mass units, for your information. Divide -mgh by kT, where T is the temperature in degrees Kelvin (which equals the temperature in Celsius plus 273 degrees) and k is Boltzmann’s constant. Use 1.3807×10^-23 meters-squared kilograms
