A barometer is a closed-system vacuum that allows the Mercury to expand with changes in temperature and pressure.
barometers with mercury measure air pressure. when the air pressure is high the mercury rises
A mercury barometer is a 1 meter long glass tube with the top sealed and turned upside down in a bath of mercury the pressure on the surface of the bath of mercury lifts the level of the mercury in the tube dependent on atmospheric pressure.
The instrument used to determine air pressure is called a barometer. A simple barometer is a long glass tube filled with mercury that it turned upside down into another container filled with mercury.
A barometer is an instrument used to measure atmospheric pressure.
There are several options depending on the type of air pressure being measured:In the 1800's ships used a weather glass - a simple barometer - to measure changes in air pressure.To measure atmospheric (ambient air) pressure, a barometer is used. (It may be either an aneroid or a Mercury type of barometer.)For tires, it's a tire pressure gauge.In industrial processes and boilers the gauge is frequently called a manometer.For pressure vessels it is a Bourdon gauge.
A mercury barometer.
barometer has mercury inside it .
The mercury barometer was invented first, in 1643 by Evangelista Torricelli. The aneroid barometer was invented later, in 1844 by Lucien Vidi.
A Mercury barometer is used to measure atmospheric pressure.
A barometer that uses mercury measures air pressure by monitoring the height of the mercury column in a tube. As air pressure changes, the mercury level rises or lowers in response. This instrument is called a mercury barometer.
A mercury barometer uses a column of mercury to measure atmospheric pressure, while an aneroid barometer uses a flexible metal box to measure pressure changes. Mercury barometers are more accurate but require careful handling due to the toxic nature of mercury, while aneroid barometers are portable and safer to use.
Good question.Look at it like this if you had two barometers side by side, one a mercury barometer and the other a barometer that reacted to changes in air pressure using some bellows and a spring.Then, as the pressure changed you marked the second barometer positions and noted on the dial the inches reading from the mercury barometer, the second barometer measurement scale would mimic the real mercury barometer even though it did not actually use any mercury.
The most commonly used barometer is the mercury barometer.However, it is not easy to transport but it gives more accurate results. Another type of barometer is Aneroid barometer which is easy to transport and handle.
Torricelli invented a device for measuring air pressure called a mercury barometer. It consists of a glass tube filled with mercury placed in a dish of mercury. The height of the mercury in the tube changes with variations in atmospheric pressure.
BAROMETER ---- It's actually a mercury barometer
their spelling is different.
When air pressure increases, the mercury in a barometer rises.