black·bod·y

(blăk′bŏd′ē)

n. pl. black·bod·ies

A theoretically perfect absorber of all incident radiation.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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:

Noun

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"

black body, full radiator

natural object - an object occurring naturally; not made by man

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References in periodicals archive

In 1804, Leslie reported that the emission of surfaces depended on their nature and established the primacy of lampblack as a blackbody surface [6].

Kirchhoff's Law of Thermal Emission: Blackbody and Cavity Radiation Reconsidered

Mather (NASA-Goddard Space Flight Center) presented a new spectrum derived from hundreds of millions of COBE measurements [that is] indistinguishable from the theoretical curve for a 2.726[degrees] Kelvin blackbody....

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To produce a mixed white light with a color temperature of around 4000 K with phosphor Y-561 and the blue LED, the concentration of phosphors was calculated from the intersection coordinates of the two lines on the CIE chromaticity diagram: the first being the locus of blackbody radiation at 4000 K; the other line being the connection points between the blue LED spectrum and the Y-561 phosphor emission spectrum.

Optical Modeling Analysis of Red, Green, and Yellow Phosphors with a Blue LED

Therefore, we conclude that the Hawking radiation for macroscopic black hole is proportional to the area of black hole, as much as Planck's blackbody radiation spectrum is proportional to the area of blackbody.

Hawking Radiation of a Single-Partition Black Hole

A blackbody to provide the reference radiance temperature necessary for sensor calibration is mounted directly on the tilting mechanism.

Experimental Design Validation of Tilting Calibration Mechanism by Using Shape Memory Alloy Spring Actuator

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.

Turkmenistan: Revitalization of a Nation through Education

It is known that all objects with a temperature above absolute zero radiate electromagnetic waves, and this phenomenon is known as blackbody radiation.

Calculating the sun's photospheric temperature, an undergraduate physics laboratory

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).

Far-infrared radiative properties of water vapor and clouds in Antarctica: two years of spectral infrared measurements of downwelling radiation between 7 and 100 [micro]m in wavelength at high altitude over the Antarctic Plateau are presented

The benefits of the carbon nanotube based solar water heaters is the property of carbon nanotubes as a near blackbody absorber, allowing the absorption of >98% of the solar energy [Zhang 2005].

Solar Water Heating System with Phase Change Materials and Carbon Nanotube

[T.sub.g] = equivalent blackbody temperature of ground surface (K or R)

Development of a renewable ground-loop (ReGL) system

We emphasize that our proposal is general and can be applied to further broaden the absorption bandwidth with more slow-wave structures integrated in a unit cell, allowing for realization of thin film thermal emitters and blackbody emission.

Light Absorber with an Ultra-Broad Flat Band Based on Multi-Sized Slow-Wave Hyperbolic Metamaterial Thin-Films

The term "full spectrum" typically implies either a blackbody source (for color temperatures below 4,000K) or a CIE daylight illuminant.

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