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 ?
Taking into consideration measurements of a combustion process, an analysis of absorption spectra of the gases in a mixture depends mainly on chemical composition of the fuels [11].
Absorption spectra in the UV/VIS region of NYS I solutions in methanol (2.
The absorption spectra as a function of incident wavelength are shown in Fig.
Therefore, there could not be a suitable correlation between the absorption spectra of the photo-initiators and the emission spectrum of the LCUs.
The absorption spectra were recorded on the same spectrophotometer, with 1cm quartz cells and supported with Jasco Spectra Manager software for GUL-LIVER Ver.
By capturing absorption spectra across the UV-vis wavelength range, the new PDA detector provides a fingerprint of each 'time slice' of the sample as it elutes from the column.
The absorption spectra of chlorophyll in plants is a rich source of information about the state of the microorganism (9).
Human tissues contain a variety of substances whose absorption spectra at NIR wavelengths are well defined.
Seoul, Korea) has patented modified phytochrome A (PHYA) nucleic acid molecules in which Pr absorption spectra have been shifted to longer wavelength (i.
Figure 1 shows the absorption spectra of UVA1 and UVA2 in non-donor solvents.