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Atmospheric pressure - Wikipedia


Atmospheric pressure, sometimes also called barometric pressure, is the pressure exerted by the weight of air in the ...

How is air pressure measured? | Reference.com


Air pressure is measured by using a barometer, the value of which is given in varying units, including inches of mercury (in Hg) or millimeters of mercury (mm ...

What instrument is used to measure atmospheric pressure? | How ...


Sep 19, 2011 ... A: A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. A simple barometer consists of a long glass ...

How Do We Measure Air Pressure - Tree House Weather Kids ...


An instrument that measures air pressure is called a barometer. One of the first barometers was developed in the 1600s. The original instrument had mercury in  ...

www.ask.com/youtube?q=How Is Atmospheric Pressure Measured&v=4K_XJGuRy88
May 3, 2013 ... How an old fashioned mercury barometer measures barometric pressure. (a.k.a. atmospheric pressure).



The atmospheric pressure is the weight exerted by the overhead atmosphere on a unit area of surface. It can be measured with a mercury barometer, consisting ...

atmospheric pressure - National Geographic Society


May 14, 2011 ... Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight ...

atmospheric pressure | Britannica.com


Aug 7, 2014 ... Atmospheric pressure can be measured with a mercury barometer (hence the commonly used synonym barometric pressure), which indicates ...

Atmospheric Pressure: force exerted by the weight of the air


Atmospheric pressure is defined as the force per unit area exerted against a ... Atmospheric pressure is measured with an instrument called a "barometer", which ...

How is atmospheric pressure measured? - Quora


This is how Torricelli created the first barometer in 1643. He took a glass tube, sealed at one end and completely filled it with mercury. He then ...

How Is Atmospheric Pressure Measured?
Atmospheric pressure is determined via the use of a barometer. Barometers are either mercury-filled or aneroid. The mercury variety consists of a tube, the top of which is closed and the bottom open. The tube is generally labeled with units of... More »
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Measuring Atmospheric Pressure - Windows to the Universe


Jun 11, 2010 ... This image shows three common ways that atmospheric pressure is measured - using a mercurial barometer, an aneroid barometer or a ...

Atmospheric Pressure - HyperPhysics


The system is said to have a positive gauge pressure exerted by the air supply. ... The standard atmospheric pressure is measured in various units: ...

Understanding air pressure - USATODAY.com


Since the pressure depends upon the amount of air above the point where you're measuring the pressure, the pressure decreases as you go higher.