Blackbody

ahd-5
  • noun. A theoretically perfect absorber of all incident radiation.
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  • noun. a theoretical body, approximated by a hole in a hollow black sphere, that absorbs all incident electromagnetic radiation and reflects none; it has a characteristic emission spectrum
    • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. a hypothetical object capable of absorbing all the electromagnetic radiation falling on it
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