METEOROLOGICAL INSTRUMENTS

Meteorology is a complicated science that requires sophisticated tools to study the atmosphere. These tools help scientists understand the unpredictable nature of the weather.

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Thermometer

Thermometer, an instrument for measuring temperature. The measurement is always indirect, that is, it is a measurement not of temperature itself but of the effect of temperature on some physical property of a material used in the thermometer.

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  • How the Tornado Intercept Vehicle Works
    How the Tornado Intercept Vehicle Works

    Tornado chasers generally stay about a mile away from the tornado itself -- but not IMAX cinematographer Sean Casey. He has built a Tornado Intercept Vehicle and hopes to withstand a direct hit. Check it out. See more »

  • How the Totable Tornado Observatory Worked
    How the Totable Tornado Observatory Worked

    When the earliest tornado on record was observed, onlookers called it a "steeple of fire." Technological advancements like the Totable Tornado Observatory have since helped demystify these powerful storms. See more »

  • How Weather Balloons Work
    How Weather Balloons Work

    Have you ever wondered how weather stations gather all of their data? Even though technology for predicting the weather has improved, simple weather balloons do a lot of the hard work every day. See more »

  • Anemometer
    Anemometer

    Anemometer, an instrument for measuring wind speed. Anemometers are used not only in weather recording and forecasting, but also in mines, tunnels, and ventilation systems; in aircraft testing and other experimental work; and in aerial navigation. See more »

  • Barometer
    Barometer

    Barometer, a device for measuring atmospheric pressure (the pressure resulting from the weight of the air above a given point). See more »

  • Hygrometer
    Hygrometer

    Hygrometer, a device for determining the humidity of the atmosphere. It can indicate relative humidity (the percentage of moisture in the air), absolute humidity (the amount of moisture), or both. See more »

  • Rain Gauge
    Rain Gauge

    Rain Gauge, an instrument used to measure precipitation. Rain is measured directly; snow, hail, and sleet must first be melted. See more »

  • The Ultimate Thermometer Quiz
    The Ultimate Thermometer Quiz

    Thermometers are used to measure the temperature of all sorts of things, from a fever to the heat in an oven to the weather. Various thermometers exist with various scales for temperature measurement. Take this quiz to see how much you know about thermometers. See more »

  • Thermometer
    Thermometer

    Thermometer, an instrument for measuring temperature. The measurement is always indirect, that is, it is a measurement not of temperature itself but of the effect of temperature on some physical property of a material used in the thermometer. See more »

  • Weather Vane
    Weather Vane

    Weather Vane, or Wind Vane, a device that shows the direction of the wind. A common type is an arrow fixed to an upright rod that is able to rotate freely, so that the arrow always points into the wind. See more »

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