◆Types of Pressure◆
➡️ Atmospheric Pressure
● Pressure exerted by atmospheric air on earth surface is called as atmospheric pressure.
● Atmospheric pressure is measured by using barometer. Therefore it is also called as
Barometer pressure.
Barometer pressure.
➡️Gauge Pressure
● Pressure measured above atmospheric pressure is called as Gauge pressure.
➡️ Absolute Pressure
● Pressure measured with respect to absolute zero pressure then it is called as Absolute pressure.
➡️ Vacuum Pressure
● Pressure measured below atmospheric pressure is called as Vacuum pressure
➡️Gauge, absolute, vacuum pressures are all positive quantities and are related to each other by,
Pabsolute = Patm + Pgauge
Pabsolute = Patm - Pvacuum
Pabsolute = Patm - Pvacuum
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