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     instrumentationblog.com

     • Manometers typically use a U-shaped tube of a fluid (often mercury) to measure pressure. A barometer (see (Figure)) is a device that typically uses a single column of mercury to measure atmospheric pressure.
     courses.lumenlearning.com/suny-osuniversityphysics/chapter/14-2-measuring-pressure/

     14.2 Measuring Pressure | University Physics Volume 1

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   What instruments measure air pressure?

   • Instruments that measure air pressure are called barometers and people have been using them for weather forecasting and scientific research for hundreds of years. Let's take a closer look at how they work!

   How do barometers work? - Explain that Stuff

   www.explainthatstuff.com/barometers.html

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   How does a barometer measure atmospheric pressure?

   • 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. Barometers measure this pressure. Atmospheric pressure is an indicator of weather.

   Barometer - Education | National Geographic Society

   education.nationalgeographic.org/resource/barometer/

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   What unit does a mercury barometer measure?

   • Mercury barometers and manometers are so common that units of mm Hg are often quoted for atmospheric pressure and blood pressures. Figure 14.4.3 14.4. 3: A mercury barometer measures atmospheric pressure. The pressure due to the mercury’s weight, h ρ ρ g, equals atmospheric pressure.

   14.4: Measuring Pressure - Physics LibreTexts

   phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/Book:_University_Physics_I_-_Mechanics_Sound_Oscillations_and_Waves_(OpenStax)/14:_Fluid_Mechanics/14.04:_Measuring_Pressure

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   Why do meteorologists use barometers?

   • Meteorologists use barometers to predict short-term changes in the weather. A rapid drop in atmospheric pressure means that a low-pressure system is arriving. Low pressure usually means it will be cloudy, rainy, or windy. Air moves away from areas of high pressure. High-pressure areas usually create cool, dry air and clear skies.

   Barometer - Education | National Geographic Society

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   What is a mercury barometer used for?

   • A mercury barometer is used to calibrate and check aneroid barometers. Calibration can be, for example, in terms of atmospheric pressure or altitude above sea level. The concept of altitude above sea level, based on barometric pressure, is used to create one type of aircraft altimeter.

   Barometer | Definition, Types, Units, & Facts | Britannica

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   What is a barometer used for?

   • 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. The tube itself sat in a reservoir filled with more mercury.

   How Is Barometric Pressure Measured and Why? - HowStuffWorks

   science.howstuffworks.com/nature/climate-weather/meteorological-instruments/barometric-pressure.htm

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3. science.howstuffworks.com › nature › climate-weatherHow Is Barometric Pressure Measured and Why? - HowStuffWorks

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   Feb 27, 2024 · Barometric pressure is a measurement of the air pressure in Earth's atmosphere. For this reason, it is also known as atmospheric pressure. The pressure is created by fluid gas molecules in the air, and it extends in all directions.

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     ­A barometer measures air pressure: A "rising" barometer...

4. phys.libretexts.org › Bookshelves › University14.4: Measuring Pressure - Physics LibreTexts

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   Measuring Pressure. A host of devices are used for measuring pressure, ranging from tire gauges to blood pressure monitors. Many other types of pressure gauges are commonly used to test the pressure of fluids, such as mechanical pressure gauges. We will explore some of these in this section.

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6. www.explainthatstuff.com › barometersHow do barometers work? - Explain that Stuff

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   Jul 3, 2022 · Instruments that measure air pressure are called barometers and people have been using them for weather forecasting and scientific research for hundreds of years. Let's take a closer look at how they work!

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7. www.britannica.com › technology › barometerBarometer | Definition, Types, Units, & Facts | Britannica

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   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.

   • Author: The Editors of Encyclopaedia Britannica

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     The history of the barometer (and how it works) - Asaf Bar-Yosef

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     Force and Pressure || Liquid pressure || Manometer

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     Measuring Pressure With Barometers and Manometers

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9. education.nationalgeographic.org › resource › barometerBarometer - Education | National Geographic Society

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   Oct 24, 2023 · 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. Barometers measure this pressure.

10. courses.lumenlearning.com › suny-osuniversity14.2 Measuring Pressure | University Physics Volume 1

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    A host of devices are used for measuring pressure, ranging from tire gauges to blood pressure monitors. Many other types of pressure gauges are commonly used to test the pressure of fluids, such as mechanical pressure gauges. We will explore some of these in this section.

11. www.scientificamerican.com › measure-the-pressureMeasure the Pressure - Scientific American

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    Sep 27, 2018 · But how do you know if the air pressure changes—or if it is high or low? Scientists have developed an instrument called a barometer that can measure atmospheric pressure.