blackbody


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black·bod·y

 (blăk′bŏd′ē)
n. pl. black·bod·ies
A theoretically perfect absorber of all incident radiation.

black•bod•y

(ˈblækˈbɒd i)

n., pl. -bod•ies.
a hypothetical body that absorbs without reflection all of the electromagnetic radiation incident on its surface.
[1700–10]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.blackbody - 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 periodicals archive ?
Figures 5 shows the measured heat flux levels at different distances d from the blackbody aperture, with increasing blackbody temperature.
Two years earlier COBE beautifully confirmed the blackbody nature of the background radiation.
Just consider the blackbody radiation curve for 3 K, whose peak is located at wavelength of 1 mm.
He said that anything our eyes can see is not a perfect blackbody because if it could absorb all the light, it will not be visible to us.
It is known that all objects with a temperature above absolute zero radiate electromagnetic waves, and this phenomenon is known as blackbody radiation.
The positive signal peaks above the blackbody curve corresponding to the thick clouds are a local effect due to the emission of the first part of the measurement path, which is inside the protected chimney, just above the instrument, and therefore at higher temperature than outside (chimney effect).
In addition to being excellent blackbody absorbers, carbon nanotube sheets are a fast source of Joule heating [Kwon 2004] and can be utilized to heat the solar collectors when sunlight is not sufficient.
5 [micro]m) are calibrated on orbit from views of cold space and a blackbody in the instrument itself.
The text opens by discussing the observations and technical limits of known climatology, including long-term variability, then introducing the relevance of blackbody radiation modeling and thermodynamics to understanding the climate system.
Given the lack of recognition for Hasenohrl's contribution, they examined the Austrian physicist's original work on blackbody radiation in a cavity with perfectly reflective walls.
All practical light sources are represented, including 17 filament, 68 mixed LED, 159 phosphor LED, 106 fluorescent, 31 high-intensity discharge, 8 temperatures of blackbody radiation, 6 phases of CIE daylight, and 6 miscellaneous illuminants.
Usually the electromagnetic and physical properties of calibration load are widely studied [1-3], and the design and manufacture of blackbody are of concern [4-6].