Crossword clues for blackbody
Wiktionary
alt. (context physics English) 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 n. (context physics English) 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
n. 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" [syn: black body, full radiator]
Usage examples of "blackbody".
The formula relating the total radiant energy emitted by a blackbody to its temperature was found experimentally by Joseph Stefan in 1879 and derived theoretically by Ludwig Boltzmann in 1889.
I see a little corner of his rubberboat sticking out of his cardinal black hat above its frightening cargo blackbody in drape.
The blackbodies had learned the name “Avery robot,” but the name lacked meaning beyond its intonation.
He had watched Synapo and Sarco drop, but had not distinguished them from the rest of the blackbodies which, a half-hour later, began to fall from the sky like the gentle descent of a black snow that melted to bright raindrops as it neared the surface, raindrops inversely and miraculously suspended above the trees in defiance of gravity.
With their benign weather—brought under control eons before—the notion of shelter and buildings, if it had ever existed, had long since disappeared from the racial memory of the blackbodies, lost in prehistory.
Just before the incident, that same witness had been observing the flight of several of the aliens we now call blackbodies to a point near the forest about twenty meters above where the incident occurred.
The performance was repeated by a succession of blackbodies, and as the witness approached closer, it became apparent that on each cycle, the shimmering proceeded not only to the ground, but also back up, traversing the perimeter of a thin vertical area that grew taller with each successive pass.
The pattern was repeated rapidly by twenty-one blackbodies before the witness arrived.
As the construction progressed, the intersecting arcs traversed by the shimmer, and the point to which the blackbodies flew to begin each pass, rose in the air until it reached its present location.
That operation now begins at midmorning at a height of a little more than a kilometer directly over the Compass Tower and lasts for one hundred twenty passes of the blackbodies, which generally takes a little over an hour.
When the blackbodies begin construction on the last day, we'll move it out to serve the new city.
The blackbodies were up there like every other morning, but unlike construction days, they were loosely dispersed from horizon to horizon, languidly circling, soaking up the sun's radiation.
There hadn’t been much art in his life lately, especially if you didn’t count the rather breathtaking spectacle of a thousand blackbodies spread across the sky.
Remember how Adam was so intent on imprinting on everything—us, the kin, the blackbodies, robots?
He had admired the blackbodies, taking them, with their high intellectual abilities and impressive appearances, as probably the truest example of the humans he was programmed to seek.