radiometer

/ˌreɪdiˈɑmədər/
IPA guide

Other forms: radiometers

Definitions of radiometer
  1. noun
    meter to detect and measure radiant energy (electromagnetic or acoustic)
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    types:
    Crookes radiometer
    electromagnetic radiometer consisting of a small paddlewheel that rotates when placed in daylight
    radiomicrometer
    radiometer that is extremely sensitive
    Rayleigh disk
    an acoustic radiometer consisting of a light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity
    type of:
    meter
    any of various measuring instruments for measuring a quantity
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