electromagnetic spectrum

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e·lec·tro·mag·net·ic ra·di·a·tion

, electromagnetic spectrum (ĕ-lek'trō-mag-net'ik rā'dē-ā'shŭn, spek'trŭm)
Wavelike energy propagated through matter or space; varies widely in wavelength, frequency, photon energy, and properties; may be natural or artificial and includes radiowaves, microwaves, heat waves, visible light, ultraviolet light, x-rays, gamma rays, and cosmic radiation.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

electromagnetic spectrum

The continuum of radiation, varying in frequency, and, correspondingly, wavelength, that includes, in order of decreasing frequency, cosmic ray photons, gamma rays, X rays, ultraviolet radiation, visible light, infrared radiation, microwaves, radio waves and heat.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
Electromagnetic spectrumclick for a larger image
Fig. 142 Electromagnetic spectrum . The wavelength ranges of the electromagnetic spectrum.

electromagnetic spectrum

the entire range of wavelengths of electromagnetic radiation, most of which are not detectable by the human eye except in the visible spectrum from about 400–700 nm wavelength. Wavelengths shorter than the visible spectrum contain large quantities of energy which can be harmful to living material. See Fig. 141 . See X-RAY, GAMMA RADIATION, ULTRAVIOLET LIGHT.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

e·lec·tro·mag·net·ic ra·di·a·tion

, electromagnetic spectrum (ĕ-lek'trō-mag-net'ik rā'dē-ā'shŭn, spek'trŭm)
Wavelike energy propagated through matter or space; varies widely in wavelength, frequency, photon energy, and properties; may be natural or artificial and includes x-rays, gamma rays, and other forms.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Compound (3) was identified as [beta]-sitosterol by co-TLC and complete superimposable IR spectrum with that of an authentic sample.
An IR spectrum of this material was obtained by spreading a thin layer on a KCI plate (Fig.
The IR spectrum indicates lactose, a typical excipient ingredient, and a small amount of Teflon, likely due to small flakes that could not be manually removed from the granule mixture.
The resulting pattern, called an IR Spectrum, identifies the chemical constituents of each slice, and thus of the painting at different depths.
IR spectrum of compound 2 missed the absorption band (3485-2470 cm-1) for carboxylic acid function, while other bands were seen nearly at the same wave number when compared to the spectrum of 1, indicating the similar nature of 2.
The original characteristic and new IR spectrum of the chromatographically isolated [C.sub.76]-[D.sub.2] sample are obtained in the absorption mode in this article, Figure 1, in order to find the abovementioned novel parameters for its quantitative determination.
In the IR spectrum of 1, the loss of the centered band is observed at 3427 [cm.sup.-1], which was assigned to H-O enol group in the ligand.
The vibration bands that appeared in the IR spectrum of DFNB at 1342 and 1518 cm-1 are assigned to symmetric and asymmetric stretching vibrations of the NO2 groups in the molecule, respectively.
IR spectrum of 4a is characterized with an absorption appearing at 3345 [cm.sup.-1] due to typical vNH stretching of secondary amines.