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  1. Barometer - Wikipedia

    Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries. Barometers and pressure altimeters (the most …

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

    Dec 15, 2025 · 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 …

  3. What Is A Barometer, How It Works, Where To Place It ...

    Jun 27, 2025 · A barometer is defined as a meteorological instrument used to measure air pressure in the atmosphere. It forms a crucial part of any weather station and is primarily used with other …

  4. How Barometers Measure Air Pressure - ThoughtCo

    May 7, 2025 · 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 …

  5. How Is Barometric Pressure Measured and Why? - HowStuffWorks

    Feb 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 …

  6. BAROMETER Definition & Meaning - Merriam-Webster

    The meaning of BAROMETER is an instrument for determining the pressure of the atmosphere and hence for assisting in forecasting weather and for determining altitude.

  7. Barometer - National Geographic Society

    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.

  8. What is a Barometer? How It Measures Pressure

    Learn what a barometer is, how it measures atmospheric pressure, its history, types (mercury, aneroid), and common uses like altitude measurement.

  9. Barometer - GeeksforGeeks

    Jul 23, 2025 · A barometer is a scientific device that indicates air pressure. It is used for monitoring atmospheric pressure, commonly used for weather forecasting and altitude calculations.

  10. How do barometers work? - Explain that Stuff

    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 …