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Related to absorbance: spectrophotometer, transmittance


(əbˈsɔːbəns; -ˈzɔː-)
(General Physics) physics a measure of the light-absorbing ability of an object, expressed as the logarithm to base 10 of the reciprocal of the internal transmittance. See transmittance


(æbˈsɔr bəns, -ˈzɔr-)

n. Physics.
the capacity of a substance to absorb radiation.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.absorbance - (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation
density, denseness - the amount per unit size
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
References in periodicals archive ?
5] absorbance were stronger among those with hypertension, diabetes, or obesity than among participants without these comorbid conditions.
Absorbance was read at 350 nm against the blank (water) and flavonoid content was expressed as mg querce-tin equivalents in 100 g of fresh material.
The absorbance measurements were performed with a Perkin Elmer Lambda 850 spectrometer equipped with a 150 mm integrating sphere (IS) detector.
High absorbance values for samples and/or positive control - absorbance does not go down as the sample is diluted down the plate), might be caused by:
The ecoVis is designed for absorbance and fluorescence of cuvette-based samples.
where A and I are the absorbance and transmittance of PC, respectively.
1] were examined to differentiate absorbance peaks due to cellulose esterification from those indicative of triglyceride esters, carboxylic acids, and amide carbonyl groups (per the reaction of diacids in the presence of ammonium hydroxide (7)).
It was quite exciting to see the absorbance spectra peaks where you expected them to be when we extracted pigments from spinach.
Generally, the wavelengths at which the absorbance for the particular chromophores is characteristic, such as regions of flat maxima and minima, are preferable.
The basic structure of equipment is composed of a photometric clamp, figure 1, which has two semicircular electrodes of stainless steel sheet on each clamping die molded on glass tube, each electrode presenting a hole through which the radiation of a LED, passes on a clamping die of the clip, to a photodiode receiver, located on the other clamping die, monochromatic radiation emitted by the LED having a wavelength corresponding to maximum optical absorbance of the analyzed chemical species, the combined photometer also includes an electrical cable for connection and an electronic part.
We also wanted to determine whether the absorbance of individual layers could be added to obtain the total system absorbance as logically inferred from Beer's law.