Aneroid Barometer

(noun)

A device for measuring pressure, often specially calibrated for use as an altimeter, consisting of a box or chamber partially exhausted of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air.

Related Terms

Examples of Aneroid Barometer in the following topics:

  • Measurements: Gauge Pressure and the Barometer

    • 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 aneroid cell is made from beryllium-copper alloy and is partially evacuated.
    • A stiff spring prevents the aneroid cell from collapsing.
    • While the aneroid barometer is the underlying mechanism behind many modern pressure measuring devices, pressure can also be measured using more advanced measuring mechanisms.

  • 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

  • Measuring Blood Pressure

    • The measurement of these pressures is usually performed with an aneroid or electronic sphygmomanometer .

  • Checking Circulation

    • Blood pressure values are generally reported in millimeters of mercury (mmHg), though aneroid and electronic devices do not use mercury.
    • This comprises an inflatable cuff placed around the upper arm at roughly the same vertical height as the heart, attached to a mercury or aneroid manometer.

  • Mercury

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

  • GDP per capita

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

  • Capillary Action

    • This may be seen between mercury and glass in barometers and thermometers.

  • Origins of the War

    • Southern slave owners 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 slavery 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).