cavity radiation meaning

noun (physics)
  The radiation emerging from a small hole leading from a constant temperature enclosure

[Electronics]
Energy radiated from a tiny hole in an otherwise sealed chamber. The radiation occurs at all electromagnetic wavelengths; the greater the temperature within the chamber, the greater the frequency at which the radiation has its maximum amplitude.

Examples

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1. In thermodynamic equilibrium the cavity radiation will precisely obey Planck's law.
2. Black-body radiation provides insight into the thermodynamic equilibrium state of cavity radiation.
3. In 1898, Otto Lummer and Ferdinand Kurlbaum published an account of their cavity radiation source.
4. When the small piece of carbon is put in, it transduces amongst radiation frequencies so that the cavity radiation comes to thermodynamic equilibrium.
5. published by Albert Einstein in September 1905 in the " Annalen der Physik "  a few editions after Hasen�hrl published his results on cavity radiation.