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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 ...

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 ...

What units are used to measure air pressure? | Reference.com


Air pressure, the force exerted on a mass by the weight of air particles, is measured in either inches of mercury or in millibars, represented by inHg and mb , ...

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  ...



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 ...

measurement of atmospheric pressure - WMO


tendency is the character and amount of atmospheric pressure change for a 3 h ... The basic unit for atmospheric pressure measurements is the pascal (Pa) (or ...

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).

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.

Chapter 5 Measurement of Atmospheric Pressure


5.2 Principle of Atmospheric Pressure Measurement ··················································· ··································· 1. 5.2.1. Mercury Barometer ...

atmospheric pressure | Britannica.com


Force per unit area exerted by an atmospheric column (that is, the entire body of air above the specified area). Atmospheric pressure can be measured with a ...

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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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 ...

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: ...

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 ...