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radiometer

radiometer

1 8.5
A device that measures energy from light or heat
  • noun
  • /ˌreɪdiˈɑːmɪtər/
  • Specialized
translation icon : radiometro
  • Scientists relied on a radiometer to gather data on the electromagnetic energy of the stars.
  • Resolution Radiometer
  • Spectro-Radiometer
  • Infrared Radiometer

Examples

  • I started measuring the radiation emitted by the surface during twilight each hour using a radiometer.

    Blog text (29)
  • Karl, what's the radiometer reading?

  • This is a Crooks radiometer, and it works like this.

  • Toward the end of World War II, electronic radiometers began being used for oceanic optical measurements.

    Academic text (2011)
  • The Pressure Modulator Infrared Radiometer on the Mars Observer will study the Martian atmosphere over the limb of the planet, as in this photo.

    Academic text (1992)
  • The earliest space-related application was the vertical temperature-profile radiometer, launched into Earth's orbit in 1972.

    Academic text (2005)
  • To watch ice freeze in plants, Wisniewski uses an Inframetrics model 760 imaging radiometer, which can visually record ice forming in very small droplets of water and estimate the surface temperature of plants.

    Academic text (1997)
  • The engineer used a radiometer to measure the infrared radiation emitted by the surface.

  • In the laboratory, the students learned how a radiometer detects radiant energy from various sources.

Synonyms

photometer
vsradiometer
  • Specialized
1 8.6

A tool that measures how bright light is

covers more types of radiant energy beyond visible light
radiomicrometer
vsradiometer
  • Specialized
9.9

A very sensitive device that measures tiny amounts of light or heat

is less sensitive and measures broader ranges of radiant energy
spectroradiometer
vsradiometer
  • Specialized
9.9

A device that measures how much light there is at each color

is focused on general detection, not detailed wavelength distribution
actinometer
vsradiometer
  • Specialized
9.9

A tool that measures the strength of light, like sunlight

uses broader detection methods rather than relying on chemical change
Crookes radiometer
vsradiometer
  • Specialized
8.7

A small glass device with thin blades that spin when light hits them

is a measuring instrument rather than a demonstration apparatus
radiation pyrometer
vsradiometer
  • Specialized
8.9

A tool that measures temperature of hot objects without touching them

directly detects and measures radiant energy rather than inferring temperature

Compounds

Crookes radiometer
  • Specialized
8.7

A small glass device with thin blades that spin when light hits them

How Sensitive

radiomicrometer
  • Specialized
9.9
bolometer
  • Specialized
9.9
radiometer
  • Specialized
1 8.5
light meter
  • Specialized
1 4.2
detector
  • Specialized
189 3.5

Surface Forms

radiometer singular
radiometers plural

Morphology

radiometer = meter (semi-transparent) = radio + meter

The word is compositionally built from a radiation-related combining form and 'meter', but the scientific prefix is less transparent to an average learner than the ordinary noun 'meter'.

Etymology

The word radiometer comes from the parts radio- (from Latin radius, meaning 'ray') and -meter ('measure'), like in thermometer. So a radiometer is a tool that 'measures rays' of light or other radiant energy.