Black body - Wikipedia
A black body or blackbody is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. The radiation emitted by a black body in thermal equilibrium with its environment is called black-body radiation .
Black-body radiation - Wikipedia
Black-body radiation is the thermal electromagnetic radiation within, or surrounding, a body in thermodynamic equilibrium with its environment, emitted by a black body (an idealized opaque, non-reflective body).
Blackbody | Definition, Color, & Facts | Britannica
2024年11月29日 · Blackbody, in physics, a surface that absorbs all radiant energy falling on it. The term arises because incident visible light will be absorbed, not reflected, and therefore the surface will appear black.
6.2: Blackbody Radiation - Physics LibreTexts
A perfect absorber absorbs all electromagnetic radiation incident on it; such an object is called a blackbody. Figure \(\PageIndex{1}\): A blackbody is physically realized by a small hole in the wall of a cavity radiator.
Blackbody Radiation: Definition, Equation, Example & Spectrum
2023年1月14日 · A blackbody is a hypothetical object that absorbs all radiation falling on it and reflects and transmits none. A blackbody is also a perfect emitter of radiation. It emits radiation across all wavelengths – the phenomenon known as blackbody radiation.
Blackbody Spectrum - Blackbody | Planck's Law | Wien's Law ...
Learn about the blackbody spectrum of Sirius A, the sun, a light bulb, and the earth. Adjust the temperature to see the wavelength and intensity of the spectrum change. View the color of the peak of the spectral curve.
What is Blackbody Radiation – Definition - Thermal Engineering
2019年5月22日 · A blackbody absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. Its absorptivity is therefore equal to unity, which is also the highest possible value. That is, a blackbody is a perfect absorber (and a perfect emitter).
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