How to use Black-body in a sentence
According to independent experiments by Paschen the radiation of the D line sent out by the sodium flame of sufficient density is nearly equal to that of a black body at 'the same temperature.
The same author proved that a sufficient thickness of layer raised the radiation to that of a black body in agreement with Kirchhoff's law.
This fact may be expressed by saying that the radiation within a heated enclosure is the same as that of a perfectly black body.
The " black body " is an ideal body with surface so constituted as to reflect no part of any radiations that fall upon it; in the case of such a body Kirchhoff and Balfour Stewart showed that unless energy were to be lost the rate of emission and absorption must be in fixed ratio for each specific wave-length.
A perfect black body radiator has an emissivity of unity, so all other surfaces have emissivity between zero and one.Advertisement
It also shows that the black body emits at a peak wavelength, at which most of the radiant energy is emits at a peak wavelength, at which most of the radiant energy is emitted.
The measurement of black body temperature therefore links the primary spectral radiance and irradiance scales to primary detector scales.
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Choosing a black body shaper if you have fair skin will severely limit what you can wear it under because the contrast could show through your clothing.Advertisement
Accessories can change the look of a uniform, even something as basic as a black body suit paired with a pair of jazz pants.