Learning Lesson: Measure the Pressure II: The "Dry" Barometer

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  • Classroom Activities


National Oceanic and Atmospheric Administration (NOAA), National Weather Service (NWS)


Barometers using mercury are heavy and fragile. The first working version of an aneroid (without water) barometer was built in 1843 by French scientist Lucien Vidie. This made the barometer very portable and it became a commonly used meteorological instrument. It was still calibrated to the mercurial barometer with readings in inches of mercury. Even as late as the 1990s, National Weather Service offices still calibrated and verified the accuracy of the aneroid barometer with the mercurial barometer. Using simple items the student will make a device for indicating air pressure changes, called an aneroid barometer.

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