noun (Chemical Engineering: Heat transfer) A blackbody is a hypothetical object whose ability to radiate heat is perfect. ⇒ Recent work highlights that the Sun cannot meet the requirements for a blackbody because it is not in thermal equilibrium with a perfectly absorbing enclosure. ⇒ A blackbody is a body that emits and absorbs at any temperature the maximum possible amount of radiation at any given wavelength. ⇒ A blackbody is a hypothetical object whose ability to radiate heat is perfect.
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