Barometer - Wikipedia
WebA 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
WebApr 22, 2024 · 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 - National Geographic Society
WebOct 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.
Barometer Definition & Meaning - Merriam-Webster
WebThe meaning of BAROMETER is an instrument for determining the pressure of the atmosphere and hence for assisting in forecasting weather and for determining altitude. How to use barometer in a sentence.
How Is Barometric Pressure Measured and Why? | HowStuffWorks
WebFeb 27, 2024 · What Is a Barometer? 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.
How do barometers work? - Explain that Stuff
WebJul 3, 2022 · If you imagined something a bit like a pair of scales that can measure the weight of the air in the tube, congratulations! That's pretty much the solution. A device that can measure air pressure (which we call a barometer) works by measuring how much the air is pressing down on it.
Learn How to Read a Barometer - ThoughtCo
WebUpdated on March 04, 2020. A barometer is a device that reads atmospheric pressure. It uses liquid mercury to predict the weather by tracking atmospheric pressure changes resulting from the movement of warm and cold weather systems.
Barometer Definition and Function (Science) - ThoughtCo
WebJan 5, 2018 · Barometer Definition. A barometer is a device that measures atmospheric pressure. The word "barometer" comes from the Greek words for "weight" and "measure." Changes in atmospheric pressure recorded by barometers are most often used in meteorology for forecasting weather.
What does it mean when a barometer is rising or falling?
WebMay 12, 2021 · Simply put, a barometer acts like a balance that ‘balances' the weight of the atmosphere (or air around you) against the weight of a mercury column. If the air pressure is high, the mercury will rise. At low air pressure, the mercury goes down. What is a barometer used for? We use barometers mostly to measure atmospheric pressure.
How Barometers Measure Air Pressure - ThoughtCo
WebJul 3, 2019 · By Jenny Worboys. Updated on July 03, 2019. A barometer is a widely used weather instrument that measures atmospheric pressure (also known as air pressure or barometric pressure) -- the weight of the air in the atmosphere. It is one of the basic sensors included in weather stations.
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