black body

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black body

or

blackbody

n
(General Physics) physics a hypothetical body that would be capable of absorbing all the electromagnetic radiation falling on it. Also called: full radiator
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Noun1.black body - a hypothetical object capable of absorbing all the electromagnetic radiation falling on it; "a black body maintained at a constant temperature is a full radiator at that temperature because the radiation reaching and leaving it must be in equilibrium"
natural object - an object occurring naturally; not made by man
References in classic literature ?
And then, with a renewed horror, I saw a round, black object bobbing up and down on the edge of the pit.
I fancied I saw some black object flopping about upon this bank, but it became motionless as I looked at it, and I judged that my eye had been deceived, and that the black object was merely a rock.
My thoughts were disturbed by a crying of sea-birds hurrying towards some black object that had been stranded by the waves on the beach near the enclosure.
And certainly before long the black object was not more than a mile from us.
The minutes passed, and there the figure stood, a motionless black object, behind the black parapet of the bridge.
Tom turned in time to see the poor fellow's struggles, and at the same time there was a swirl in the water and a black object shot forward.
A perfectly black object, he contended, would elude and defy the acutest vision.
One night as I sat, half stupified, in a den of more than infamy, my attention was suddenly drawn to some black object, reposing upon the head of one of the immense hogsheads of Gin, or of Rum, which constituted the chief furniture of the apartment.
Another mortal struggle, and he was up again, beating the water with his hands, and looking out, with wild and glaring eyes that showed him some black object he was drifting close upon.
Another and another popped out of the circular, pot-like dwelling, while from all the other black objects came popping more creatures--very like jumping-jacks when their boxes are unhooked--until fully a hundred stood gathered around our little group of travelers.
Sounding this bottle with a spike, he pierced and produced to view some little irregularly formed black objects, which might have been familiar enough to a woman accustomed to the luxurious tables of the rich, but which were a new revelation to a person like myself, who
At length they reached a point in the river where the roving eye of Heyward became riveted on a cluster of black objects, collected at a spot where the high bank threw a deeper shadow than usual on the dark waters.