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- Barometer - Wikipedia
A barometer is a scientific instrument that is used to measure air pressure in a certain environment Pressure tendency can forecast short term changes in the weather Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries
- Barometer | Definition, Types, Units, Facts | Britannica
A barometer is a device used to measure atmospheric pressure Because atmospheric pressure changes with distance above or below sea level, a barometer can also be used to measure altitude There are two main types of barometers: mercury and aneroid Learn more about barometers in this article
- Barometer - Simple English Wikipedia, the free encyclopedia
A barometer is an instrument used to measure air pressure The barometer measures air pressure in various kinds of units including hectopascals (hPa) and millibars There are various types of barometers such as the water barometer, aneroid barometer, and the mercury barometer
- Atmospheric pressure - Wikipedia
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013 25 hPa), which is equivalent to 1,013 25 millibars, [1] 760 mm Hg, 29 9212 inches Hg, or 14 696 psi [2]
- Bar (unit) - Wikipedia
The bar is a metric unit of pressure defined as 100,000 Pa (100 kPa), though not part of the International System of Units (SI)
- Barometer - Education | National Geographic Society
A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure The atmosphere is the layers of air wrapped around Earth That air has a weight and presses against everything it touches as gravity pulls it to Earth
- How Is Barometric Pressure Measured and Why? - HowStuffWorks
A barometer is a scientific instrument designed to measure barometric pressure Barometers as we know them date back to 1643 when the Italian inventor Evangelista Torricelli measured air pressure using a glass tube filled with mercury and open on its downward-pointing end
- Barograph - Wikipedia
A barograph is a barometer that records the barometric pressure over time in graphical form This instrument is also used to make a continuous recording of atmospheric pressure
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