(physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body
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absorptivity::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | absorption factor |
| Type of | physical property |
| Derivation | absorptive |
Examples of absorptivity
absorptivity
Quantum dots have very sharp wavelength, high molar absorptivity and quantum yield.
From the en.wikipedia.org
Thus for gases, emissivity and absorptivity are generally quite low compared with solids.
From the independent.co.uk
Absorptivity, reflectivity, and emissivity of all bodies are dependent on the wavelength of the radiation.
From the en.wikipedia.org
Then it strictly obeys Kirchhoff's law of equality of radiative emissivity and absorptivity, with a black body source function.
From the en.wikipedia.org
You really must read up the teachings of Hoyt C. Hottell at MIT in the 1950s who was the first person to explain how you could predict the emissivity and absorptivity of gas mixtures.
From the independent.co.uk
However, it is typical in engineering to assume that a surface's spectral emissivity and absorptivity do not depend on wavelength, so that the emissivity is a constant.
From the en.wikipedia.org
It is generally true that the emissivity and absorptivity are properties of the material only, so that this equivalence will hold even when the radiation field is not thermal radiation.
From the en.wikipedia.org
If the radiating body and its surface are in thermodynamic equilibrium and the surface has perfect absorptivity at all wavelengths, it is characterized as a black body.
From the en.wikipedia.org
It is also affected by differences in absorptivity and specific heat of the ground which in the absence of wind greatly influences the temperature attained by the superincumbent air.
From the en.wikipedia.org
The water absorption of aluminium and palladium becomes an unacceptable source of outgassing, and even the absorptivity of hard metals such as stainless steel or titanium must be considered.
From the en.wikipedia.org
- (physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body
- The efficiency of radiation absorption.
- In a solar thermal system, the ratio of solar energy striking the absorber that is absorbed by the absorber to that of solar energy striking a black body (perfect absorber) at the same temperature. The absorptivity of a material is numerically equal to its emissivity.
- Symbol: The ratio of the radiant or luminous flux absorbed by a body or material to the incident flux. It is now called the Absorptance. [DC99]
- Also known as the molar extinction coefficient in molecular spectroscopy, it is the wavelength-dependent absorption of an analyte as a function of concentration and pathlength and is expressed in units of concentration -1 * cm -1.
