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

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.
References in periodicals archive ?
Through relevant experiment testing, the UV-Vis absorption spectra and TEM images of five groups of AgNPs synthesized based on different PVP dosages as shown in Figure 5 were obtained.
From Table 2, the relative trend of UV-Vis absorption spectra based on the TD-DFT calculations is well consistent with our experimental values.
The absorption spectra of the ASA with the addition of Tm(III) are shown in Figure 3(a).
The absorption spectra of [Tm.sup.3+] ions can be significantly altered by codoping with [Y.sup.3+] ions.
Manchado, "On the molar extinction coefficient and integrated molar absorptivity of the infrared absorption spectra of [C.sub.60] and [C.sub.70] fullerenes," Fullerenes, Nanotubes, and Carbon Nanostructures, vol.
Figure 3 also shows absorption spectra of pure PVK and PVK thin films containing 15% of complexes C1 or C2.
Examination of UV absorption spectra of copolymer solutions shows that the maximum absorbance is shifted slightly to the shorter wavelengths for all triblock copolymer samples, including PSU-b-PAO diblock copolymer, as compared with PSU, which can be explained in terms of some conformational constraints of the macromolecular chains.
Huber, "Coherent potential approximation for the absorption spectra of a two-dimensional Frenkel exciton system with Gaussian diagonal disorder," Modern Physics Letters B, vol.
The absorption spectra of other PMD qualitatively resemble the spectrum shown on Figure 2.
Optical absorption spectra were obtained with an Ocean Optics S2000-UV-Vis system, Transmission Electron Microscopy (TEM) images at 100 kV were carried out using a JEOL-1230, Thermogravimetric Analysis (TGA) was made, and the average particle size was measured with a Dynamic Light Scattering Nanosizer (DLS).
Shape of the absorption spectrum, peak position, type, homogeneity and concentration of the synthesized Ti[O.sub.2] NPs colloidal were determined by UV-Visible absorption spectra of the solution by using UV-Vis spectrophotometer.