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 ?
It was found that as the thickness of Ti[O.sub.2] increases, transmittance decreases and absorption increases, where the difference was shown clearly in the visible light spectrum. As for the absorption, it showed a pattern opposite to that of transmittance in the visible light wavelength range.
The goggles allowed night vision to be maintained while reducing (~ 97%) the photopic transmittance of the incident light, and limiting it to the red portion of the visible light spectrum.
Like the young blue stars and older red stars that punctuate space and astound with their spectacular beauty, the colored stones on the bezel of the 45mm sapphire case run up and down the visible light spectrum.
"We always knew there were some out there that are enormously large and bright, but they are invisible in visible light spectrum because they are so obscured by the thick dust clouds that surround their young stars." "So our best guess is that the first stars and galaxies and black holes all formed within the first half a billion to one billion years.
Because these are just your standard lenses - like you might find in your spectacles or DSLR - they work across the entire visible light spectrum, and also a few other frequencies as well.
Loctite Visible Light Cure technology is an innovation that relies solely upon the visible light spectrum to deliver a safe, efficient, immediate cure for a broad array of medical device assembly applications.
This has the ability to inspect product in four application-specific wavelengths, ranging from ultraviolet, through the visible light spectrum, to infrared.
The CCD provides enhanced sensitivity across the whole visible light spectrum, and 1.3 million pixels of non-interpolated data.
The new inspection system offers resolution better than 1mm, with the ability to inspect product in four application specific wavelengths, ranging from ultraviolet, through the visible light spectrum, to infrared.
More of the shorter wavelengths are scattered - on the bluer end of the visible light spectrum - than the longer wavelengths, which is why the sky appears blue.
Much of what goes on in space happens outside of the visible light spectrum so to our eyes, it wouldn't look like much.

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