Anemometer

Anemometer

An instrument for measuring the velocity, pressure, or other properties of the wind; a wind-gage; a wind-meter. The following are different types of anemometer:

Biram's anemometer, a form of wind-gage.

calibration of an anemometer, the conversion of anemometer-readings into true wind-velocities or wind-pressures by application of whirling-apparatus methods.

Hagemann's anemometer, a suction anemometer by which the velocity is found from the rarefaction produced within a vertical tube by the wind.

helicoid anemometer, a modified form of Woltman's anemometer in which the plates are bent into helicoidal surfaces like those of a screw propeller; a helicoidal anemometer.

Hooke's anemometer, a pendulum anemometer.

Lander's anemometer, an anemometer or anemograph in which a rubber bellows lifts a float suspended in glycerin.

Lind's anemometer, an anemometer consisting of an inverted glass syphon partly filled with water, mounted on a weathervane.

" pendulum anemometer, an anemometer, first described in 1666, in which a metal pendulum is hung broadside to the wind, the velocity of the wind being measured by the deflection of the pendulum from the vertical; Hooke's anemometer.

reflecting anemometer, same as Aime's nephoscope. see under nephoscope.

Robinson's anemometer, an anemometer in which four hollow hemispheric cups revolve on a vertical axis.

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