Dec 31, 2024 · A mercury barometer is a device used to measure atmospheric pressure with a column of mercury. The mercury barometer is the oldest type of barometer, having been invented in 1643–44 by the Italian physicist and mathematician Evangelista Torricelli.

A mercury Barometer otherwise known as the Torricellian barometer is made up of an upside-down long glass tube of length three feet which is closed at one of the ends and the open end is made to stand in the glass reservoir filled with mercury.

In this document we discuss measuring atmospheric pressure using a Mercury Barometer. This instrument is also known as a Fortin Barometer. This type of instrument was first used by Torricelli in 1643; Fortin slightly modified the original design in 1810.

The Mercury Barometer. In this document we discuss measuring atmospheric pressure using a Mercury Barometer. This instrument is also known as a Fortin Barometer. This type of instrument was first used by Torricelli in 1643; Fortin slightly modified the original design in 1810.

Oct 24, 2023 · A mercury barometer has a glass tube that is closed at the top and open at the bottom. At the bottom of the tube is a pool of mercury. The mercury sits in a circular, shallow dish surrounding the tube. The mercury in the tube will adjust itself …

A mercury barometer consists of a glass tube closed at one end with an open mercury-filled reservoir at the base. The weight of the mercury creates a vacuum in the top of the tube. This is known as a Torricellian vacuum.

The diagram shows a simple mercury barometer. Which height is a measure of the atmospheric pressure?

An instrument for measuring the pressure of the atmosphere is called a BAROMETER, and a barometer where the pressure of a column of mercury is used to balance the pressure of the atmosphere is shown in the diagram. Mercury is used in the barometer because it is opaque and has a high density.

The principle of a mercury barometer is based on the experiment from E. Torricelli. The atmospheric pressure is taken by the height of the mercury column placed in the mercury reservoir. One standard atmospheric pressure (atm) is the height of 76 cm mercury column. 1 atm = 76 cmHg = 760 mmHg = 760 torr (T3-1) Operation 1. Step 1: Zero adjust ...

The diagram below shows a simple mercury barometer. The mercury level is at a height h when the atmospheric pressure is Pa. What is the pressure at P?