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bolometer

bolometer

9.9
A device that measures very small amounts of heat from infrared light
  • noun
  • /bəˈlɒmətər/
  • Specialized
translation icon : bolómetro
  • Starlight enters through a small window in the side of the Dewar flask and raises the temperature of the bolometer.

Examples

  • A bolometer is the instrument used to measure radiant energy over a wide band by absorption and measurement of heating.

    Blog text (5)
  • In essence, a bolometer is a piece of material whose electrical resistance varies with its temperature.

    Academic text (1991)
  • OK, what the absorb, what the bolometer head actually looks like is we have some large lump of gold here.

  • Bolometers were among the earliest detectors used in the near infrared, and modern bolometers are one trillion times as sensitive as common thermometers.

    Academic text (1991)
  • Bolometers were among the earliest detectors used in the near infrared, and modern bolometers are one trillion times as sensitive as common thermometers.

    Academic text (1991)
  • A bolometer can accurately measure tiny changes in infrared radiation, making it essential for scientific research.

  • Researchers use a bolometer to detect the heat emitted by distant stars in the universe.

  • The bolometer played a crucial role in the experiment, as it allowed the scientists to measure thermal radiation with great precision.

How Sensitive

bolometer
  • Specialized
9.9
PIR
  • Specialized
8.1
thermometer
74 3.0

Surface Forms

bolometer singular
bolometers plural

Morphology

bolometer = bolo + meter

Although the word contains the recognizable measuring suffix '-meter', the combining form 'bolo-' is specialized and does not transparently signal 'heat (infrared) radiation' to an average learner.

Etymology

The word bolometer breaks into bolo- and -meter, and -meter means 'measure', just like in thermometer. A helpful way to remember bolo- is to imagine a 'bolt' of heat or light, because a bolometer measures very small amounts of invisible heat called 'infrared radiation'.