blackbody radiation


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blackbody radiation

n.
The electromagnetic radiation given off by a theoretical blackbody, its average frequency increasing as the blackbody's temperature increases.
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Noun1.blackbody radiation - the electromagnetic radiation that would be radiated from an ideal black body; the distribution of energy in the radiated spectrum of a black body depends only on temperature and is determined by Planck's radiation law
electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
References in periodicals archive ?
Focusing on the non-mathematical assumptions underlying significant events in modern science, he offers a critical history of contemporary physics that demystifies such concepts as singularity, blackbody radiation, the speed of light, natural constants, black holes, dark matter, and more.
Clearly, if Kirchhoff was correct and blackbody radiation was independent of the nature the walls, then such radiation could not be ascribed causality in the emitting structure.
The weight percentages of the Y561 phosphor in these packages were manipulated to ensure that the chromaticity points were at the locus of blackbody radiation of 4000 K for simulation purposes; the percentages corresponding to the four types of packages, dispensing, conformal, remote, and semispherical, were 7.6%, 64.0%, 24.1%, and 24%, respectively.
For macroscopic black hole, if d[n.sub.photon] is the number of photons with a frequency between [nu] and [nu] + d[nu] emitted during unit time, from Planck's blackbody radiation formula, we have
and they found that at temperatures above 1400[degrees]C, the effect of thermal blackbody radiation on the spectrum becomes noticeable.
The planned experiments will be directed toward understanding the effects of static and time-dependent electric and magnetic fields, and blackbody radiation fields on slow dissociation processes that occur in highly excited states of N2, O2 and NO, investigations of collisional energy transfer processes, and studies of the role that these excited electronic states play in the evolution and reactivity of atmospheric plasmas incl
Here the students apply concepts such as blackbody radiation distributions and the Stefan-Boltzmann law (Maslov 2008).
Where [k.sub.pg] is the gas thermal conductivity; [k.sub.rad] is the effect of radiation; [d.sub.m] is the pore diameter; [epsilon] is the particle surface emissivity and a, is the blackbody radiation constant.
Their efficiency is constrained by the Shockley-Queisser limit [2], due to blackbody radiation [3], spectral loss, excessive energy of the absorbed photons, and recombination loss [4].
[eta] = H/l is the ratio of honeycomb height to its cell size; [epsilon] is the radiation rate of internal honeycomb structure; and [sigma] = 5.67 x [10.sup.-8] W/[m.sup.2] x [K.sup.4] is the Stefan-Boltzmann blackbody radiation constant.
Jayroe Jr., "Fresnel lens solar concentrator design based on geometric optics and blackbody radiation equation," in Nonimaging Optics: Maximum Efficiency Light Transfer V, vol.
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.