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Definition of the noun absorbance

What does absorbance mean as a name of something?

noun - plural: absorbances

  1. (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation

Alternative definition of the noun absorbance


  1. [physics] A logarithmic measure of the amount of light that is absorbed when passing through a substance


Absorbance: In spectroscopy, the absorbance of a material is a logarithmic ratio of the amount of radiation falling upon a material to the amount of radiation transmitted through the material. Absorbance measurements are often carried out in analytical chemistry.

  • also known as Optische dichtheid, Absorbans

Printed dictionaries and other books with definitions for Absorbance

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Google previewEnvironmental Biology for Engineers and Scientists (2005)

by David A. Vaccari, Peter F. Strom, James E. Alleman

Absorbance is the reduction in the transmission of light along the light path and may occur due to both dispersion and absorption of light.

Google previewLasers in Analytical Atomic Spectroscopy (1996)

by Joseph Sneddon, Terry L. Thiem, Yong-Ill Lee

Absorbance is a unitless number, typically 0.01 to 2.0. 1n practice, it is better to work in the middle of this range (0.1-0.3 is recommended) as the precision is reduced at the extremes due to instrumental noise. Also, the linearity AAS is ...

Google previewTranslational Perspectives in Auditory Neuroscience (2012)

Hearing Across the Life Span — Assessment and Disorders by Kelly L. Tremblay, Robert F. Burkard

The absorbance is a dimensionless variable with values between zero and one in the absence of additional sources of sound energy in the form of low-level otoacoustic emissions (OAE) (see Chapter 5). If all the energy is absorbed by the ...

Google previewSolar Energy (2015)

An Introduction by Michael E. Mackay

The absorbance is the key parameter in the performance of any solar powered device. It dictates the optical properties of materials used in solar devices and indicates how much radiation is absorbed within a given distance as it penetrates the ...

Google previewHandbook of Analytical Instruments

by R S Khandpur

Absorbance is the property of a sample, whereas absorptivity is the property of a substance and is a constant. Mathematically, absorbance is related to percentage transmittance T by the expression: The relationship between energy absorption ...

Google previewTurfgrass Physiology and Ecology (2011)

Advanced Management Principles by Gregory E. Bell

Absorbance is the portion of irradiance striking an object that is absorbed by the object. Transmittance is the portion of irradiance striking an object that passes through the object. Morphological plant characteristics are those characteristics ...

Google previewApplied Superconductivity (2015)

Handbook on Devices and Applications by Paul Seidel

The total absorbance is a function of the interaction length [28]. Sprengers et al. [ 28] reported about improved optical coupling in the near-IR spectral range by integrating an SNSPD device on top of a planar optical waveguide. The nanowires ...

Google previewPhotostasis and Related Phenomena (2013)

by Theodore P. Williams, Anne B. Thistle

Axial absorbance plotted against retinal position for 10 locations each on the horizontal and vertical meridians. Axial absorbance is the absorbance at 500 nm wavelength per micrometer of section thickness through the ROS, multiplied by the ...

Google previewSurface Analysis Methods in Materials Science (2003)

by John O'Connor, Brett A. Sexton

The resultant absorbance is the negative log of the ratio of the intensities of the measured to reference intensities. In a Fourier transform instrument the background is measured as a single beam and the measured spectrum ratioed to this ...

Google previewInfrared Spectral Interpretation (1998)

A Systematic Approach by Brian C. Smith

Absorbance is a unitless quantity. so the units of £ are usualK given in ( concentration x pathlength)"1. Thus. absorptivity units cancel the units of the other two variables in Beer's law . For pure samples. concentration is at its maximum. and the ...

Google previewConcise Dictionary of Biomedicine and Molecular Biology (2001)

by Pei-Show Juo

Absorbance (A) The measurement of the amount of light absorbed by a solution. It is mathematically defined ...

Google previewEncyclopedia of Inland Waters (2009)

The separateeffects of dissolved and particulate mattercan be seenin a plot of absorbance at 420 nm(not calibrated for Pt–Co) in eutrophic Lake 227 (Figure 6). The absorbance in a filtered sample remained relatively constant between late ...

Google previewIllustrated Pocket Dictionary of Chromatography (2004)

by Paul C. Sadek

absorbance The mathematical representation for the loss of incident radiant energy intensity (e.g., ultraviolet, visible, infrared) as it passes through the sample is the absorbance, A: ...

Google previewEncyclopedia of the Eye, Four-Volume Set (2010)

by Joseph Besharse, Reza Dana

Optical density Absorbance; see spectral absorbance. Radiant power and quantum units Radiant power is measured in watts but it is sometimes more appropriate to measure it in quanta s−1. Sensitivities may be expressed as the logarithm to ...

Google previewDictionary of Chemistry (2014)

by Andrew Hunt

absorbance shows how strongly a sample absorbs radiation. Absorbance measures the extent of absorption of electromagnetic radiation by a sample in a ...

Google previewModern Dictionary Cyto And Histo Chemistry (1991)

by C.K. Shah

Absorbance * Absorbance It measures the amount of monochromatic light absorbed by the coloured end product. It is useful for the quantitative analysis of coloured com- pound-the histochemical preparation. It is expressed as logarithms of ...

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Photo about Absorbance


Chlorophyll absorbance spectra

Taken from Nature's Palette: The Science of Plant Color by David Lee


Photo credit: dullhunk

Video about Absorbance

Absorbance Meaning

Video shows what absorbance means. A logarithmic measure of the amount of light that is absorbed when passing through a substance, the capacity of a ...

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Scrabble value of A1B3S1O1R1B3A1N1C3E1

The value of this 10-letter word is 16 points, but it's not an accepted word in the Official Scrabble Players Dictionary.

Anagrams of ABSORBANCE

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