barometer

(noun)

an instrument for measuring atmospheric pressure

Related Terms

  • International System of Units
  • pascal
  • Pressure
  • Newton

Examples of barometer in the following topics:

  • Measurements: Gauge Pressure and the Barometer

    • Early barometers were used to measure atmospheric pressure through the use of hydrostatic fluids.
    • Pressure, as determined by hydrostatic barometers, is often measured by determining the height of the liquid in the barometer column, thus the torr as a unit of pressure, but can be used to determine pressure in SI units .
    • Hydrostatic based barometers most commonly use water or mercury as the static liquid.
    • Another type of barometer is the aneroid barometer, which consists of a small, flexible sealed metal box called an aneroid cell.
    • The concept of determining pressure using the fluid height in a hydrostatic column barometer
  • SI Units of Pressure

    • Torr and millimeters of mercury (mm Hg, defined as a one millimeter difference in the height of a mercury barometer at 0°C) are nearly equivalent.
    • manometer barometer mmhg atm kpa units kinetic molecular theory
  • GDP per capita

    • For this reason GDP per capita may not necessarily be a barometer for the quality of life in a given country.
  • Mercury

    • Mercury is used in thermometers, barometers, manometers, float valves, mercury switches, and other devices.
  • Capillary Action

    • This may be seen between mercury and glass in barometers and thermometers.
  • Origins of the War

    • Southern slaveowners held that restricting slavery would violate the principle of states' rights whereas many Northerners believed popular sovereignty should serve as a barometer for the expansion of slavery, and some even believed it should be abolished completely.
  • Global finance: initial considerations

    • In addition, the foreign exchange market is one of the most traded and liquid instruments in the financial world, and serves as a barometer of broader financial market conditions and risk appetite.
  • Temperature

    • Thermoscopes also served as barometers (which measure pressure).
  • Roots of the Scientific Revolution

    • Invention of tools that deepened the understating of sciences, including mechanical calculator, steam digester (the forerunner of the steam engine), refracting and reflecting telescopes, vacuum pump, or mercury barometer.
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