In a mercury barometer, it measures the pressure of the atmosphere around you and pushes it against the liquid mercury. If the atmospheric pressure around you is high the mercury will rise.

FARGO — The barometer is one of the basic instruments of meteorology. It is used to measure air pressure. The word comes from a combination of two Greek words; "baro," meaning weight, and "meter ...

If atmospheric pressure increases, the mercury rises further; if atmospheric pressure decreases, the mercury level falls. (Check out this video on how to make a classical mercury barometer.) As it ...

A barometer indicates pressure in units known as millibars (mbs) or inches of mercury. Barometers are the standard for measuring surface air pressure for weather purposes.

If atmospheric pressure increases, the mercury rises further; if atmospheric pressure decreases, the mercury level falls. (Check out this video on how to make a classical mercury barometer.) ...

Dear Tom, Who invented the barometer? — Steven Allividor, Chicago Dear Steven, It happened 375 years ago. Evangelista Torricelli, a student of Galileo, invented the mercury barometer in 1643.

This same principal explains how a barometer measures the atmospheric pressure. Since mercury is much heavier than water, the atmospheric pressure can only support a column of mercury about thirty ...

Toriccelli also went on to develop the mercury barometer, an instrument used to measure atmospheric pressure. A barometer also monitors variations in atmospheric pressure. As air becomes thinner ...

1644: Italian physicist Evangelista Torricelli demonstrates the principles of the mercury barometer, an instrument he invented the previous year. In 1641, Torricelli was working as an assistant to ...

Dear Tom, Who invented the barometer? Steven Allividor, Chicago Dear Steven, It happened 375 years ago. Evangelista Torricelli, a student of Galileo, invented the mercury barometer in 1643. And ...