Question

Why is barometric height used as a unit to express Atmospheric Pressure.

Answer 1

This is because from the barometric formula, the change in atmospheric pressure is directly proportional to the change in height of the column of the atmosphere.

Answer 2

Answer:

Barometric height used as a unit to express the atmospheric pressure because atmospheric pressure holds the mercury in the tube, so the height of mercury is used as a unit to express the atmospheric pressure.