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(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 ?
The absorbances of all the dilutions were taken after 30 minutes at [lambda] max 517nm using methanol as blank.
Moreover, modern spectrophotometers are sufficiently stable that even a single-beam instrument, in which the absorbances for irradiated and nonirradiated specimens for each time period are measured individually, will allow accurate determination of the absorbance difference.
The reaction of allyl moieties were studied via vinylic groups, which cause the absorbances of vibrations at 930 [cm.
In 173 individuals of the 3 groups studied, the total IgA concentrations and anti-h-tTG absorbances were correlated [[r.
The main reason for working with absorbances in the range 0 to 1 AU is to preserve the linearity of Beer's law.
To prospectively identify samples with the interference seen in the index case, we used open channels on the Hitachi 917 analyzer and manually programmed the analyzer to create a flag that was triggered when the difference between the absorbances at measurement points 12 and 14 (216 and 252 s, respectively) was >0.
Once the absorbances have been calculated, the identification is performed by the neural network software.
After this incubation period, absorbances of the mixtures were measured at 470 nm.
0, and the absorbances at 405, 414, and 455 nm were converted into relative absorbance values.
To represent the relative absorbance difference between each modified and native sequence, the parameter designated r[DELTA]A was calculated as: r[DELTA]A = (AD - AN)/ AN, where AN and AD are the absorbances of the native and deamidated sequences, respectively; r[DELTA]A-1 and r[DELTA]A-2 refer to differences calculated for peptides-1 and -2.