Spectrum
['spektrəm] or ['spɛktrəm]
Definition
(noun.) a broad range of related objects or values or qualities or ideas or activities.
(noun.) an ordered array of the components of an emission or wave.
Typist: Stanley--From WordNet
Definition
(n.) An apparition; a specter.
(n.) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope.
(n.) A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum.
Checked by Jocelyn
Synonyms and Synonymous
n. Image, appearance, representation.
Typist: Mag
Definition
n. the image of something seen continued after the eyes are closed: the colours of light separated by a prism and exhibited as spread out on a screen:—pl. Spec′tra.—n. Spec′trograph an apparatus for photographing a spectrum.—adjs. Spectrograph′ic -al.—n. Spectrog′raphy the art of using the spectrograph.—adj. Spectrolog′ical.—adv. Spectrolog′ically.—ns. Spectrol′ogy the division of physical science that embraces spectrum analysis: demonology; Spectrom′eter an instrument like a spectroscope by means of which the angular deviation of a ray of light in passing through a prism can be accurately measured.—adj. Spectromet′ric.—n. Spec′trophōne an adaptation of the spectroscope in which on the principle of the radiophone perception of a succession of sounds takes the place of observation by the eye.—adj. Spectrophon′ic.—ns. Spec′tro-polar′iscope a polariscope combined with a spectroscope; Spec′troscope an instrument for forming and examining spectra of luminous bodies so as to determine their composition.—adjs. Spectroscōp′ic -al.—adv. Spectroscōp′ically.—ns. Spec′troscōpist one skilled in spectroscopy; Spec′troscōpy the use of the spectroscope and the study of spectrum analysis.
Inputed by Kurt
Examples
- Professors Kirchhoff and Bunsen map Solar Spectrum, and establish Spectrum Analysis. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- Draper was also the first in America to reveal the wonders of the spectroscope; and he was first to show that each colour of the spectrum had its own peculiar chemical effect. William Henry Doolittle. Inventions in the Century.
- The colors formed in this way do not appear to the eye different from the spectrum colors, but they are actually very different. Bertha M. Clark. General Science.
- This spread of color is called the _spectrum_, and it is with the spectrum that the spectroscope has to deal. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- These are the spectrum colors often seen radiating from a diamond. Various. The Wonder Book of Knowledge.
- The validity of this assumption was finally established by spectrum analysis. Walter Libby. An Introduction to the History of Science.
- Suppose, for example, that a white hat is held at the red end of the spectrum or in any red light. Bertha M. Clark. General Science.
- It was expected that the well known yellow line of sodium would come out in the solar spectrum, but it was just the opposite that took place. William Henry Doolittle. Inventions in the Century.
- If we examine such a spectrum we find the following colors in order, each color imperceptibly fading into the next: violet, indigo, blue, green, yellow, orange, red. Bertha M. Clark. General Science.
- Kirchoff happened to let a solar ray pass through a flame coloured with sodium, and through a prism, so that the spectrum of the sun and the flame fell one upon another. William Henry Doolittle. Inventions in the Century.
- Warm from illuminations, and music, and thronging thousands, thoroughly lashed up by a new scourge, I defied spectra. Charlotte Bronte. Villette.
Checker: Otis