absorption spectrum


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spectrum

 [spek´trum] (L.)
1. the series of images resulting from the refraction of electromagnetic radiation (e.g., light, x-rays) and their arrangement according to frequency or wavelength.
2. range of activity, as of an antibiotic, or of manifestations, as of a disease. adj., adj spec´tral.
absorption spectrum one obtained by passing radiation with a continuous spectrum through a selectively absorbing medium.
broad-spectrum effective against a wide range of microorganisms.
visible spectrum that portion of the range of wavelengths of electromagnetic vibrations (from 770 to 390 nanometers) which is capable of stimulating specialized sense organs and is perceptible as light.

ab·sorp·tion spec·trum

the spectrum observed after light has passed through, and been partially absorbed by, a solution or translucent substance; many molecular groupings have characteristic light absorption patterns, which can be used for detection and quantitative assay.

absorption spectrum

a plot of percent transmittance, absorbance, logarithm of absorbance, or absorptivity of a compound as a function of wavelength, wave number, or frequency of radiation.

absorption spectrum

The range of light a substance absorbs, plotted as a function of energy, frequency or wavelength.

ab·sorp·tion spec·trum

(ăb-sōrp'shŭn spek'trŭm)
The spectrum observed after light has passed through, and been partially absorbed by, a solution or translucent substance. Many molecular groupings have characteristic light absorption patterns, which can be used for detection and quantitative assay.

absorption spectrum

that wavelength of the light spectrum which is absorbed by a pigment. For example, chlorophyll (see Fig. 9 absorbs red and blue light and thus appears green. See ACTION SPECTRUM.

spectrum

pl. spectra, spectrums [L.]
1. the series of images resulting from the refraction of electromagnetic radiation (e.g. light, x-rays) and their arrangement according to frequency or wavelength.
2. range of activity, as of an antibiotic, or of manifestations, as of a disease.

absorption spectrum
one obtained by passing radiation with a continuous spectrum through a selectively absorbing medium.
antibacterial spectrum
the range of bacteria susceptible to a particular antimicrobial or class of antimicrobials.
broad-spectrum
effective against a wide range of microorganisms.
visible spectrum
that portion of the range of wavelengths of electromagnetic vibrations (from 770 to 390 nanometers) which is capable of stimulating specialized sense organs and is perceptible as light.
References in periodicals archive ?
Preliminary attempts to analyze CL in combination with CH or TR using a direct derivative technique failed to determine CL, because of marked interference of CH or TR in its absorption spectrum (Fig.
Again we measured the absorption spectrum, and we could see that it had changed.
The UV--vis optical absorption spectrum was analyzed in the strong absorption edge region using one electron theory of Bardeen et al.
5)" showed that the absorption spectrum of HCT was completely overlapped by that of IRB.
Key words: absorption spectrum of noble gases; Fano resonance.
It leads to apparent distortion of the infrared absorption spectrum, particularly noticeable for strong bands, and its influence clearly increases with decreasing coating thickness.
d]=13[micro]M) and has a UV-visible absorption spectrum similar to those of cytochromes in which both ligands are donated by the protein.
They measured the amount of ultraviolet light absorbed by this melanin over a range of wavelengths, obtaining what's known as an absorption spectrum.
Infrared (IR) spectrophotometers study the infrared absorption spectrum of a compound from 2.
Under these conditions, NO is bound to heme iron and the absorption spectrum shown in Fig.
The X-ray absorption spectrum is conventionally divided into the EXAFS and XANES portions.