Thermal Devices

  • Kasturi Lal Chopra
  • Inderjeet Kaur


It was not known until the discovery by William Herschel in 1800 that heat is a form of electromagnetic energy. Radiation in the infrared (IR) region with wavelength ranging from about 0.8 to 4000 μm constitutes that part of the electromagnetic spectrum which shows the greatest heating effect. Ever since this discovery, a large number of useful devices(1) have emerged. One very important class of these devices used for detection and imaging purposes is based on the fact that all bodies at temperatures above absolute zero emit radiation in the IR region which can be detected using suitable detectors.


Vacuum Evaporation Solar Flux Thermal Detector Pyroelectric Detector Johnson Noise 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • Kasturi Lal Chopra
    • 1
  • Inderjeet Kaur
    • 1
  1. 1.Indian Institute of TechnologyNew DelhiIndia

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