Entry from British & World English dictionary
A hypothetical perfect absorber and radiator of energy, with no reflecting power.
- A black body is one that perfectly absorbs all the radiation falling on it and then re-emits all of that radiation.
- In 1908 Einstein became a lecturer at the University of Bern after submitting his habilitation thesis which followed from the energy distribution law of black bodies.
- The Sun radiates approximately as a black body with a temperature of 5800 K, which peaks in the optical region at a wavelength of about 0.6 m.
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