What does blackbody mean?

Definitions for blackbody
ˈblækˈbɒd iblack·body

This dictionary definitions page includes all the possible meanings, example usage and translations of the word blackbody.

Princeton's WordNet

  1. black body, blackbody, full radiatornoun

    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"

Wiktionary

  1. blackbodynoun

    a theoretical body, approximated by a hole in a hollow black sphere, that absorbs all incident electromagnetic radiation and reflects none; it has a characteristic emission spectrum

Wikipedia

  1. blackbody

    A black body or blackbody is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. The name "black body" is given because it absorbs all colors of light. A black body also emits black-body radiation. In contrast, a white body is one with a "rough surface that reflects all incident rays completely and uniformly in all directions."A black body in thermal equilibrium (that is, at a constant temperature) emits electromagnetic black-body radiation. The radiation is emitted according to Planck's law, meaning that it has a spectrum that is determined by the temperature alone (see figure at right), not by the body's shape or composition. An ideal black body in thermal equilibrium has two main properties: It is an ideal emitter: at every frequency, it emits as much or more thermal radiative energy as any other body at the same temperature. It is a diffuse emitter: measured per unit area perpendicular to the direction, the energy is radiated isotropically, independent of direction.An approximate realization of a black surface is a hole in the wall of a large insulated enclosure (an oven, for example). Any light entering the hole is reflected or absorbed at the internal surfaces of the body and is unlikely to re-emerge, making the hole a nearly perfect absorber. When the radiation confined in such an enclosure is in thermal equilibrium, the radiation emitted from the hole will be as great as from any body at that equilibrium temperature.Real materials emit energy at a fraction—called the emissivity—of black-body energy levels. By definition, a black body in thermal equilibrium has an emissivity ε = 1. A source with a lower emissivity, independent of frequency, is often referred to as a gray body. Constructing black bodies with an emissivity as close to 1 as possible remains a topic of current interest.In astronomy, the radiation from stars and planets is sometimes characterized in terms of an effective temperature, the temperature of a black body that would emit the same total flux of electromagnetic energy.

ChatGPT

  1. blackbody

    A blackbody is an idealized physical body or object that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. It is a perfect absorber and emitter of radiation, with its emitted radiation called blackbody radiation, which is solely determined by its temperature. The concept is used in various areas of physics, including thermodynamics and quantum mechanics.

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Numerology

  1. Chaldean Numerology

    The numerical value of blackbody in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of blackbody in Pythagorean Numerology is: 3

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"blackbody." Definitions.net. STANDS4 LLC, 2023. Web. 2 Oct. 2023. <https://www.definitions.net/definition/blackbody>.

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