wavelength spectrum
51Fourier transform infrared (FT-IR) spectrometry — A form of infrared spectrometry in which an interferogram is obtained; this interferogram is then subjected to a Fourier transform to obtain an amplitude wavelength (or wavelength) spectrum …
52V-type asteroid — The spectra of the V type asteroids or Vestoids are similar to that of 4 Vesta, by far the largest asteroid in this class (hence the name). A large proportion have orbital elements similar to those of 4 Vesta, either close enough to be part of… …
53Duane–Hunt law — Spectrum of the X rays emitted by an X ray tube with a rhodium target, operated at 60 kV. The continuous curve is due to bremsstrahlung, and the spikes are characteristic K lines for rhodium. The Duane–Hunt law explains why the continuous curve… …
54spectroscopic analysis — spectrum analysis analysis by means of determining the wavelength(s) at which electromagnetic energy is absorbed by a sample …
55electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
56Redshift — This article is about the astronomical phenomenon. For other uses, see Redshift (disambiguation). Physical cosmology …
57colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …
58light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
59Color — This article is about the perceptual property. For other uses, see Color (disambiguation). For usage of color on Wikipedia, see Wikipedia:Colors. Colored pencils Color or colour (see spelling differences) is the visual perceptual property… …
60optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
