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Definition of the noun absorptance

What does absorptance mean as a name of something?

noun - plural: absorptances

  1. a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber

Alternative definition of the noun absorptance


  1. [physics] the ability of an object to absorb radiation, measured as the ratio of absorbed flux to incident flux.

Printed dictionaries and other books with definitions for absorptance

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Google previewMaterials for Infrared Windows and Domes (1999)

Properties and Performance by Daniel C. Harris

The absorptance is the fraction of incident light that is absorbed: pl-p2 Absorptance = — .

confusing distinction between absorptance and absorption coefficient: Absorptance is a number between 0 and 1 that tells us what fraction of the ...

Google previewMeasurements in Heat Transfer (1976)

by Ernst R. G. Eckert

A second limiting form for the total band absorptance is that of strong, nonoverlapping lines. Although the actual limiting result for A depends on the band model employed, the conditions for achieving this limit may be discussed in general ...

Google previewPrinciples of Sustainable Energy Systems, Second Edition (2013)

by Frank Kreith

= The overall absorptance is a function of the characteristics of the incident radiation and is, therefore, unlike the monochromatic absorptance, not a property of a surface alone ...

Google previewIntroduction to Architectural Science (2008)

by Steven V Szokolay

The term absorptivity is a property of the material, indicating the absorption per unit thickness, whilst absorptance is the property of a body ...

Google previewEnergy 2000 (2000)

The Beginning of a New Millennium by Naomi Balaban

band absorptance is a function of the volumetric absorptivity, which is a function of wavelength. Chang and Rhee (1986) converted the total band absorptance of gas radiation to spectral volume absorptivity for a calculation of the radiation ...

Google previewHigh Quality Shading and Lighting for Hardware Accelerated Rendering (1999)

by Wolfgang Heidrich

The fraction of flux that is neither reflected nor transmitted, but absorbed, is called absorptance a. The sum of reflectance, transmittance, ...

Google previewPlant Response to Stress (2013)

Functional Analysis in Mediterranean Ecosystems by John D. Tenhunen, Fernando M. Catarino, Otto L. Lange, Walter C. Oechel

the greatest factor affecting leaf absorptance is the leaf reflectance (Fig. 3). Epidermal modifications, such as the presence of waxes, trichomes, salt bladders, etc., create a reflective surface that shields ...

Google previewSolar Radiation and Clouds (2015)

by Ronald Welch

drop concentration, while cloud absorptance is a function of drop.

Google previewPrinciples of Solar Engineering, Second Edition (2000)

by D. Yogi Goswami, Frank Kreith, Jan F. Kreider

is the overall directional absorptance at0.t£). defined as the fraction of the total radiation from the direction 6,4> that is absorbed, or i3.5 J0 The overall absorptance is a function of the characteristics of the incident ...

Google previewBuilding Construction Illustrated (2014)

by Francis D. K. Ching

Absorptance is the ratio ofthe radiation absorbed by a surface to the total incident on the surface. • Transmittance is the ratio ofthe radiation transmitted through and emerging from a body to the total incidenton it, equivalent to one minus the ...

Google previewPrinciples of Solar Engineering, Third Edition (2015)

by D. Yogi Goswami

The overall absorptance is a function of the characteristics of the incident radiation and is, therefore, unlike the monochromatic absorptance, not a property of a surface alone. It is this characteristic that makes it possible to have selective ...

Google previewDictionary of Environmental Health (2003)

by David Worthington

absorptance. A measure of the capacity of a surface toabsorbradiation (including light). The absorptance iscalculatedastheratio between the radiation that falls upon asurfacetothatleaving(or being transmitted through) the same surface.

Google previewDictionary of Space Technology (2013)

by Joseph Angelo

absorptance (absorptivity) In radiation heat transfer, the absorptance (commonly used symbol, a) of a body is defined as the ratio of the incident radiant energy absorbed by the body to the total radiant energy falling ...

Google previewA Dictionary of Geology and Earth Sciences (2013)

by Michael Allaby

See also ABSORPTANCE BAND. absorptance band The range of wavelengths of *electromagnetic radiation which are absorbed by a material. See also ABSORPTANCE. absorption The amount of seismic energy lost during transmission, ...

Google previewDictionary of Architectural and Building Technology (2004)

by Henry J. Cowan, Peter R. Smith, W. K. Chow

It can be measured for a beam radiation of specified angle of incidence, or as a total hemispherical absorptance. (See also SELECTIVE SURFACE.) absorption ( a) The process whereby a liquid is drawn into the permeable pores of a porous ...

Google previewEncyclopedia of Optical Engineering: Pho-Z, pages 2049-3050 (2003)

by Ronald G. Driggers

If an object is not perfectly black, its absorbing property is characterized by the absorptance property, which is defined as the ratio of the absorbed radiant power to the radiant power incident on its surface. Specifically, the spectral directional ...

Google previewDictionary of Chemistry

Ab initio absorptance Ab initio A prediction that is based on theory rather than on experimental data. abrasive A very hard, brittle, heat-resistant substance that is used to grind the edges or rough surfaces of an object; boron carbide, diamond, ...

Google previewDictionary of Geophysics, Astrophysics, and Astronomy (2001)

by Richard A. Matzner

absorptance The fraction of the incident power at a given wavelength that is absorbed within a volume. absorption coefficient The absorptance per ...

Google previewFocal Illustrated Dictionary of Telecommunications (2013)

by Xerxes Mazda, Fraidoon Mazda

spectral absorptance: The absorptance of electromagnetic radiation within the transmission medium through which it is propagating.

Google previewSoil and Environmental Science Dictionary (2001)

by E.G. Gregorich, L. W. Turchenek, M.R. Carter, Denis A. Angers

absorptance, facteur d'absorption absorption ( physics) The process by which the energy of electromagnetic radiation is taken up by a molecule and transformed into a different form of energy. (chemistry) The ...

Google previewA Visual Dictionary of Architecture (2011)

by Francis D. K. Ching

absorptance The ratio of the radiation absorbed by a surface to the total incident on the surface. transmittance ...

Google previewDictionary of Biomedical Science (2002)

by Peter J. Gosling

ABSCISSA ABSORPTANCE entry of a foreign body as in the case of knife or bullet wounds, or, in the lungs, by the accidental inhalation of food or a TOOTH. Other internal abscesses are caused by the spread of local infections, as in a burst ...

Google previewSterling Dictionary of Physics (1999)

by Jasvinder Singh

Absorptance : The ratio of the flux absorbed by a body to the flux falling on it. The absorptance of a black body is 1. Absorption : A process in which a gas is absorbed ...

Google previewFiber Optics Standard Dictionary (2013)

by Martin H. Weik

spectral absorptance. The absorptance of electromagnetic radiation by a material evaluated at one or more wavelengths. spectral-loss curve 291 spectral ...

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Video about absorptance

Absorptance Meaning

Video shows what absorptance means. Absorbed radiation and incident radiation in a ratio format, a measurement that shows how well a surface absorbs ...

Scrabble value of A1B3S1O1R1P3T1A1N1C3E1

The value of this 11-letter word is 17 points, but it's not an accepted word in the Official Scrabble Players Dictionary.

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