Explain briefly the principle of simple mercury barometer
Answers
Explanation:
The atmospheric pressure at any level in the atmosphere depends on the weight of the air present overhead.
A mercury barometer can be referred to as a device or a scale that measures the weight of the atmosphere above at the location.
The principle of a mercury barometer can be understood with the reference to a seesaw.
With the understanding of the principle of a See-Saw, figuring out the functioning and principle of a mercury barometer is simple.
A mercury barometer serves as a balance. The weight of mercury present in the device balances the weight of the atmosphere at a given place.
The atmospheric pressure cannot be measured on a balancing scale due to the presence of air on both the scales.
Thus, in a barometer, one end is sealed to prevent air from disturbing the scale and measures.
Therefore, a Mercury Barometer works on the principle of balancing the atmospheric pressure with the volume of mercury present in the device.