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Topic: Spectrum (disambiguation)


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In the News (Wed 23 Dec 09)

  
 Color   (Site not responding. Last check: 2007-10-21)
Similarly, the intensity of a spectral color may alter its perception considerably; for example, a low-intensity orange-yellow is brown, and a low-intensity yellow-green is olive-green.
The sensitivity curves of the cones are roughly bell-shaped and overlap considerably.
The incoming signal spectrum is thus reduced by the eye to three values, representing the intensity of the response of each of these types of color receptors.
bopedia.com /en/wikipedia/c/co/color.html   (1826 words)

  
 Political spectrum - Wikipedia, the free encyclopedia
This traditional political spectrum is defined along an axis with conservatism, theocracy, and Fascism ("the Right") on one end, and socialism and communism, ("the Left") on the other.
While the right-left spectrum is so common as to be taken for granted, numerous alternatives exist, usually having been developed by people who feel their views are not fairly represented on the traditional right-left spectrum.
While multiple axes on the political spectrum had been postulated for a while, statistical analysis of survey data using principal component analysis to verify the theory and establish their existence, number and meaning was not done until recently.
en.wikipedia.org /wiki/Political_spectrum   (2556 words)

  
 Spectrum - Bvio   (Site not responding. Last check: 2007-10-21)
* The optical spectrum is the electromagnetic spectrum of visible light * The power spectrum is the distribution of the energy of a function in the frequency domain, which is actually the same as the magnitude of the frequency spectrum.
* The spectrum of a matrix is the spectrum of an operator where the matrix is considered as operator.
==Other disciplines== The meanings of ''spectrum'' in some other disciplines, including pharmacology, politics, and psychology evolved by analogy with the meanings in the physical sciences: just as dispersed colored light ranged from one end of the rainbow to the other, so also other things that range from one extreme to another were called spectra.
bvio.ngic.re.kr /Bvio/index.php/Spectral   (629 words)

  
 Encyclopedia: Spectral
A spectrum in physics relates to waves: light waves, sound waves, etc. Waves can be represented by graphs that look like waves in the sea and represent some physical quantity as a function of time (or space).
A graph showing the intensities of the "pure" sine functions composing some actual time dependent phenomenon as a function of the frequency is said to show the "spectrum" of that phenomenon.
Essentially, the construction of a spectrum from some time dependent phenomenon is a purely mathematical construct.
www.nationmaster.com /encyclopedia/Spectral   (1493 words)

  
 Spectrum - Wikipedia, the free encyclopedia
For other senses, including a variety of related meanings in the physical, mathematical, and biological sciences, see spectrum (disambiguation).
In most modern usages of the word spectrum, there is a unifying theme of a variety of possible cases between extremes at either end.
Some modern usages in mathematics evolved out of that unifying theme but may be difficult to recognize as fitting into it.
en.wikipedia.org /wiki/Spectrum   (433 words)

  
 Spectrum (disambiguation) - Encyclopedia, History, Geography and Biography
The electromagnetic spectrum, or an electromagnetic spectrum of an object
Two musical groups: Spectrum were an Australian group of the 1970s, and also a group formed by British musician Peter Kember.
Spectrum (disambiguation), Common nouns, In the physical sciences, In pure mathematics, Proper nouns, See also and Disambiguation.
www.arikah.com /encyclopedia/Spectral   (244 words)

  
 Spectrum Systems --> Info and Comparisons   (Site not responding. Last check: 2007-10-21)
The electromagnetic spectrum, shown in the table, extends from electric power at the long-wavelength end to gamma radiation at the short-wavelength end, covering wavelengths from thousands of kilometres down to fractions of the size of an atom.
In a modern Islamic country, for instance, a political spectrum might be divided along the issue of the clergy's role in government.
The Spectrum had an interesting method of handling colour; the colour attributes were held in a 32×24 grid, separate from the text or graphical data, but was still limited to only two colours in any given character cell.
www.crashdatabase.com /computers/144/spectrum-systems.html   (1567 words)

  
 Metre - Encyclopedia, History, Geography and Biography   (Site not responding. Last check: 2007-10-21)
The metre (Commonwealth English) or meter (American English) (symbol: m) is the SI base unit of length.
However, the International Prototype Metre remained the standard until 1960, when the eleventh CGPM defined the metre in the new SI system as equal to 1,650,763.73 wavelengths of the orange-red emission line in the electromagnetic spectrum of the krypton-86 atom in a vacuum.
The original international prototype of the metre is still kept at the BIPM under the conditions specified in 1889.
www.arikah.net /encyclopedia/Femtometre   (921 words)

  
 [No title]
Motherese experiments show that adults don't attend to disambiguation of their own sentences unless they are actually *aware* of that ambiguity - which they are not, sometimes.
Spectrum project is a cooperative venture of Carnegie Mellon and the three European research groups at ITC-irst in Italy, UJF in France and the University of Karlsruhe in Germany.
The Spectrum project is an ambitious project that will contribute to the science of speech recognition and machine translation even though the proposal often reads it was describing the need for additional programming efforts rather than contributing to testing theories.
www.cs.cmu.edu /afs/cs.cmu.edu/project/cmt-40/OldFiles/Nespole/Proposal/Spectrum/NSF-Reviews-0205223.txt   (826 words)

  
 Billy Cobham Spectrum   (Site not responding. Last check: 2007-10-21)
Modern (17th through 21st centuries) meaning in the physical sciences High-resolution spectrum of the Sun showing thousands of elemental absorption lines (fraunhofer lines).
Soon the term referred to a plot of light intensity as afunction of frequency or wavelength.
The word spectrum then took on the obvious analogous meaning in reference to other sorts of waves, su...
www.daikaiju.com /edge/41513-billy%20cobham%20spectrum.html   (361 words)

  
 Rxpress - Ultraviolet - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-21)
Extreme UV is characterized by a transition in the physics of interaction with matter: wavelengths longer than about 30 nm interact mainly with the chemical valence electrons of matter, while wavelengths shorter than that interact mainly with inner shell electrons and nuclei.
The unity of the different parts of the spectrum was not understood until about 1842, with the work of Macedonio Melloni, Alexandre-Edmond Becquerel and others.
UV detectors which are sensitive to UV light in any part of the spectrum respond to irradiation by sunlight and artificial light.
www.rxpresspharmacy.com /wiki/index/UV   (2774 words)

  
 Color - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-21)
The full spectrum (or distribution of color intensities) of the incoming radiation from an object determines the visual appearance of that object, including its perceived color.
The incoming signal spectrum is thus reduced by the eye to three values, sometimes called tristimulus values, representing the intensity of the response of each of the cone types.
This is exemplified by the white light that is emitted by fluorescent lamps, which typically has a spectrum consisting of a few narrow bands, while daylight has a continuous spectrum.
www.vacilando.org /_cliextra/baghdadmuseumorg/includepage.php?title=Colors&action=edit   (3594 words)

  
 Jurij Vega Information   (Site not responding. Last check: 2007-10-21)
Therefore the Apparent magnitudevisual magnitude of Vega was decided to be, by definition, zero at all wavelengths (this is no longer the case, as apparent magnitude is now most commonly defined in terms of the flux from the star).
It has also a relatively flat electromagnetic spectrum in the visual region (wavelength range 350-850 nanometers, most of which can be seen with the human eye), so the flux densities are roughly equal, 2000-4000 JanskyJy.
The star has been the subject of many 'firsts' in Astronomy; in 1850 it became the first star to be photographed, and in 1872 the first to have its spectrum photographed.
www.echostatic.com /Jurij_Vega.html   (684 words)

  
 clo information,colo   (Site not responding. Last check: 2007-10-21)
A surface that diffusely reflects all wavelengthsequally is perceived as white, while a dull fl surface absorbs all wavelengths and does not reflect (for mirror reflection this isdifferent: a proper mirror also reflects all wavelengths equally, but is not perceived as white, while shiny fl objects doreflect).
The incoming signal spectrum is thusreduced by the eye to three values, representing the intensity of the response of each of these types of clor receptors.
Different cultures have different terms for clors, and may also assign some clor names to slightly different parts of the spectrum, or have a different clor ontology: for instance, the Japanese clor aoi can be interpreted as meaning something between the Westernclor terms of "blue" and "green": green is regarded as a shade of aoi.
www.vsearchmedia.com /clo.html   (3617 words)

  
 Spectrum 24
1) " Spectrum" -- In the context of Spectrum 24
The word spectrum then took on the obvious analogous meaning in reference to other sorts of waves, suhttp:/.
2) " 24" -- In the context of Spectrum 24
www.lottery-news.net /dust6256-spectrum_24.html   (451 words)

  
 Bright Line Spectrum   (Site not responding. Last check: 2007-10-21)
Others, especially nonbelievers, have objected to Geisert and Futrell's campaign on the grounds that a meme such as "gay" mustarise organically, rather than through deliberate creation, if it is to stick.
A huge number of links to this disambiguation page should point to one of the pages listed below, or perhaps to some pagethat should be listed below but is not yet.
The word line apparently derives from the Latin linum, meaning flax plant from which linen is produced; at onetime, a stretched linen thread was the most reliable way to determine a straight line.
www.swingdancemusic.com /send/2804-bright%20line%20spectrum.html   (680 words)

  
 Talk:Spectrum - Wikipedia, the free encyclopedia
The optical spectrum is only the spectrum of visible light.
The word spectrum is used far more generally than that even if one restrict discussion to electromagnetic waves.
X-rays and radio waves also belong to the electromagnetic spectrum.
www.wikipedia.org /wiki/Talk:Spectrum   (118 words)

  
 Reference.com/Encyclopedia/Metre
The metre, symbol: m, is the basic unit of distance (or of "length", in the parlance of the physical sciences) in the International System of Units.
1889: International prototype metre bar in platinum-iridium, cross-section X. : Krypton spectrum: 1650763.73 wavelengths in vacuum of the radiation corresponding to the transition between levels 2p10 and 5d5 of the krypton-86 atom.
The eleventh General Conference on Weights and Measures (CGPM: Conférence générale des poids et mesures) in 1960 defined the metre in the new SI system as equal to 1,650,763.73 wavelengths of the orange-red emission line in the spectrum of the krypton-86 atom in a vacuum.
www.reference.com /browse/wiki/Micrometre   (1409 words)

  
 SPD (disambiguation) - Wikipedia, the free encyclopedia
Semantic Pragmatic Disorder - an illness from the autistic spectrum.
This page concerning a three-letter acronym or abbreviation is a disambiguation page—a list of articles associated with the same title.
If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.
en.wikipedia.org /wiki/SPD_%28disambiguation%29   (248 words)

  
 Rxpress - Purple - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-21)
Purple is a color intermediate between red and blue which veers more towards the red part of the spectrum.
In a color circle, violet's wavelength (around 440nm) is seen within the visible spectrum, at the extreme blue end.
Purple does not lie within the spectrum as such (although, obviously, it is visible), but is rather the admixture of the colors at the two ends of the spectrum (red and violet).
www.rxpresspharmacy.com /wiki/index/Purple   (1131 words)

  
 Middle East Open Encyclopedia: Laser   (Site not responding. Last check: 2007-10-21)
This is in contrast to common light sources, such as the incandescent light bulb, which emit incoherent photons in almost all directions, usually over a wide spectrum of wavelengths.
The concept of the semiconductor laser was proposed by Basov and Javan; and the first laser diode was demonstrated by Robert N. Hall in 1962.
The wide gain spectrum of available dyes allows these lasers to be highly tunable, or to produce very short-duration pulses (on the order of a few femtoseconds).
www.baghdadmuseum.org /ref?title=Laser   (3818 words)

  
 Learn more about Radio in the online encyclopedia.   (Site not responding. Last check: 2007-10-21)
For other article subjects named radio see radio (disambiguation).
By contrast, other types of emissions which fall outside the RF range are gamma rays, X-rays, infrared & ultraviolet light, and light visible to humans.
Amateur radio is an emergency and public-service radio service provided by enthusiasts who purchase or build their own equipment.
www.onlineencyclopedia.org /r/ra/radio.html   (2589 words)

  
 Bullet course, April 26 – 28, 2000
In one experiment the spectrum of spoken sentences was partitioned into critical-band-like channels and the onset of each channel shifted in time relative to the others so as to desynchronize spectral information across the frequency axis.
The decline in intelligibility is correlated with the complex modulation spectrum, reflecting the interaction of the phase and magnitude components of the modulation pattern distributed across the frequency spectrum.
The magnitude component of the modulation spectrum (i.e., the modulation index), by itself, is a poor predictor of speech intelligibility under these conditions.
www.speech.kth.se /~rolf/Bulletcourses.html   (3187 words)

  
 Indigo (disambiguation) - Encyclopedia, History, Geography and Biography
Indigo (comics) is the name of a DC comic book character.
Fahrenheit (video game) is known as "Indigo Prophecy" in North America.
This is a disambiguation page — a list of articles associated with the same title.
www.arikah.net /encyclopedia/Indigo_%28disambiguation%29   (163 words)

  
 Wikipedia:Links to disambiguating pages   (Site not responding. Last check: 2007-10-21)
The following pages are disambiguation pages linked here in order to avoid being shown in the list of orphaned articles.
Most of these links should point elsewhere - to properly disambiguated pages - and so the automatically generated page is a useful aid in finding those links so that they can be changed.
N: Napoleon (disambiguation) - Nauplius - NCS - NEA - Nemesis - Neptune - Netscape - New World Symphony - NF - NFL - NFS - Nicephorus - Nicholas I - Nicholas Ridley - Nike - Nine-eleven - Nirvana (disambiguation) - NLA - NLP - No More Mr.
www.freetemplate.ws /wi/wikipedia:links-to-disambiguating-pages.html   (1121 words)

  
 Reference.com/Encyclopedia/Vega
Therefore the visual magnitude of Vega was decided to be, by definition, zero at all wavelengths (this is no longer the case, as apparent magnitude is now most commonly defined in terms of the flux from the star).
It has also a relatively flat electromagnetic spectrum in the visual region (wavelength range 350-850 nanometers, most of which can be seen with the human eye), so the flux densities are roughly equal, 2000-4000 Jy.
It was also debatably the first star to have its parallax measured, in the pioneering experiments of Friedrich Struve in 1837.
www.reference.com /browse/wiki/Vega   (754 words)

  
 Semantic Flipping Demo
A model for lexical disambiguation is presented that is based on combining the frequencies of past contexts of ambiguous words.
This disambiguation process is most striking when the interpretation involves semantic flipping, that is, an alternation between two opposing meanings as more words are read in.
The activations of the units themselves are distributed across the spectrum with a rough breakout (depending on how many colors are actually allocated on your monitor) as follows:
www.cs.utexas.edu /~nn/pages/research/semflip/semflip.html   (657 words)

  
 Business Software Review:Category Top/Computers/CAD and CAM/Mechanical Design   (Site not responding. Last check: 2007-10-21)
All these latter terms are essentially synonymous, and refer to the designing and technical drawing of various projects by use of a computer rather than a traditional drawing board.
The spectrum of architectural and engineering projects commonly created with computer-aided drafting is broad, and include architectural drafting, mechanical drafting, electrical drafting, and other forms of design communication.
However, his laboratory's computer was the first practical stored program computer to be completed, and operated successfully from May 1949.In 1951, he developed the concept of microprogramming from the realisation that the Central Processing Unit of a computer could be controlled by a miniature, highly specialised computer program in high-speed ROM.
www.business-software-review.org /Category99636.html   (1175 words)

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