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Radiometr

Radiometr

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Radiometer, instrument for detecting or measuring radiant energy. The term is applied in particular to devices used to measure infrared radiation. Radiometers are of various types that differ in their method of measurement or detection. Those that function by means of an increase in the temperature of the device, such as herschels thermometer, are called thermal detectors.

  a radiometer or roentgenometer is a device for measuring the radiant flux (power) of electromagnetic radiation. Generally, a radiometer is an infrared radiation detector or an ultraviolet detector. While the term radiometer can refer to any device that measures electromagnetic radiation (e.).

An instrument for demonstrating the transformation of radiant energy into mechanical work, consisting of an exhausted glass vessel containing vanes that revolve about an axis when exposed to light. An instrument for detecting and measuring small amounts of radiant energy.