Question

give a brief description about mercury barometer
please somebody help​

Answer 1

Answer:

A Mercury Barometer is a special barometer that has a mercury filled base at the bottom and a tube with an open end and closed end dipped into it. The Mercury Barometer works under atmospheric pressure which makes the mercury in the reservoir to move up the tube.

Answer 2

Explanation:

• A barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Uses

• Mercury barometers are primarily used for measuring atmospheric pressure. It is a device that consists of an upside-down tube filled with mercury that is in a vessel full of mercury. The atmosphere (or the air) pushes down on the mercury in the vessel, which in turn, pushes the mercury in the tube up.