What is Atmospheric Pressure in Physics

Atmospheric Pressure in Physics

 

Atmospheric pressure is measured by barometers.

 

Atmospheric pressure measured by a simple mercury barometer can be calculated using the formula

p = h g

 

Standard atmospheric pressure at sea level is usually 76 cm Hg or 10 m water. It can also be expressed as 1 bar.

 

(Note: cm Hg is an accepted unit of atmospheric pressure. Other similar units involving different liquids are also accepted)

 

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