Answer the following Questions Briefly:

How is the atmospheric Pressure measured?

The atmospheric pressure is the pressure exerted on the surface area by the weight of the air above the surface of the object. It is written as “atm”. The “atm” unit is roughly equivalent to the mean sea level atmospheric pressure on the earth.

The most common way to measure atmospheric pressure is with the help of a barometer and the unit of measurement is Millibar (mb). It contains mercury. The air pressure pushes down on the surface of the mercury, making some rise up the tube. The greater the air pressure the higher the mercury rises.