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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 …

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

    Nov 12, 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 …

  3. 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 …

  4. 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.

  5. 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 …

  6. Learn How to Read a Barometer - ThoughtCo

    May 6, 2025 · A barometer measures air pressure and can help predict changes in the weather. Rising barometer readings mean fair weather, while falling readings often indicate rain or …