Question

draw the fig of instrument of atmospheric pressure

Answer 1

The atmospheric Pressure is measured by the instrument called as the Barometer.  

The Diagram of the Barometer is shown in the attachment. 

The Force exerted per unit area on the earth surface by the air column is called as the atmospheric pressure on the surface of the Earth. 

The atmospheric pressure is measured is terms of the atm. 

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Barometer is of the three kinds, 
1. Barometer.
2. Fortin's Barometer.
3. Aneroid Barometer.

The modern version of the Barometer is Aneroid. 


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