Thermal light | Wikipedia audio article
Channel: wikipedia tts
Date: 06/06/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Thermal_radiation


00:01:00 1 Overview
00:06:29 1.1 Surface effects
00:08:58 2 Properties
00:11:33 2.1 Near-field and far-field
00:14:05 2.2 Subjective color to the eye of a black body thermal radiator
00:14:16 2.3 Selected radiant heat fluxes
00:14:36 3 Interchange of energy
00:14:41 4 Radiative power
00:16:16 4.1 Constants
00:22:18 4.2 Variables
00:27:26 5 Radiative heat transfer
00:27:38 6 See also
00:27:50 7 References
00:33:04 8 Further reading



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SUMMARY
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Thermal radiation is electromagnetic radiation generated by the thermal motion of particles in matter. All matter with a temperature greater than absolute zero emits thermal radiation. Particle motion results in charge-acceleration or dipole oscillation which produces electromagnetic radiation.
The infrared radiation emitted by animals that is detectable with an infrared camera, and the cosmic microwave background radiation, are all examples of thermal radiation.
If a radiation-emitting object meets the physical characteristics of a black body in thermodynamic equilibrium, the radiation is called blackbody radiation. Planck's law describes the spectrum of blackbody radiation, which depends solely on the object's temperature. Wien's displacement law determines the most likely frequency of the emitted radiation, and the Stefan–Boltzmann law gives the radiant intensity.Thermal radiation is also one of the fundamental mechanisms of heat transfer.