Crossword clues for spectrum
- Full range, as of colors
- A to Z, e.g.
- An ordered array of the components of an emission or wave
- Broad range of related values or qualities or ideas or activities
- Rainbow coalition?
- Entire extent
- Colourful band finally uses guitarist’s aid left out
- Small pick lacking length and range
- Sabbath guitarist's mate hasn't left band
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Spectrum \Spec"trum\, n.; pl. Spectra. [L. See Specter.]
An apparition; a specter. [Obs.]
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.
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.
Absorption spectrum, the spectrum of light which has passed through a medium capable of absorbing a portion of the rays. It is characterized by dark spaces, bands, or lines.
Chemical spectrum, a spectrum of rays considered solely with reference to their chemical effects, as in photography. These, in the usual photogrophic methods, have their maximum influence at and beyond the violet rays, but are not limited to this region.
Chromatic spectrum, the visible colored rays of the solar spectrum, exhibiting the seven principal colors in their order, and covering the central and larger portion of the space of the whole spectrum.
Continous spectrum, a spectrum not broken by bands or lines, but having the colors shaded into each other continously, as that from an incandescent solid or liquid, or a gas under high pressure.
Diffraction spectrum, a spectrum produced by diffraction, as by a grating.
Gaseous spectrum, the spectrum of an incandesoent gas or vapor, under moderate, or especially under very low, pressure. It is characterized by bright bands or lines.
Normal spectrum, a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spectrum in which the colors are spaced proportionally to their wave lengths, as when formed by a diffraction grating.
Ocular spectrum. See Spectrum, 2 (b), above.
Prismatic spectrum, a spectrum produced by means of a prism.
Solar spectrum, the spectrum of solar light, especially as thrown upon a screen in a darkened room. It is characterized by numerous dark lines called Fraunhofer lines.
Spectrum analysis, chemical analysis effected by comparison of the different relative positions and qualities of the fixed lines of spectra produced by flames in which different substances are burned or evaporated, each substance having its own characteristic system of lines.
Thermal spectrum, a spectrum of rays considered solely with reference to their heating effect, especially of those rays which produce no luminous phenomena.
Douglas Harper's Etymology Dictionary
1610s, "apparition, specter," from Latin spectrum (plural spectra) "an appearance, image, apparition, specter," from specere "to look at, view" (see scope (n.1)). Meaning "visible band showing the successive colors, formed from a beam of light passed through a prism" first recorded 1670s. Figurative sense of "entire range (of something)" is from 1936.
n. 1 specter, apparition. (from early 17th c.) 2 A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
n. an ordered array of the components of an emission or wave
broad range of related values or qualities or ideas or activities
[also: spectra (pl)]
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. The word was first used scientifically within the field of optics to describe the rainbow of colors in visible light when separated using a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum.
Spectrum has since been applied by analogy to topics outside of optics. Thus, one might talk about the spectrum of political opinion, or the spectrum of activity of a drug, or the autism spectrum. In these uses, values within a spectrum may not be associated with precisely quantifiable numbers or definitions. Such uses imply a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion.
In most modern usages of spectrum there is a unifying theme between extremes at either end. Some older usages of the word did not have a unifying theme, but they led to modern ones through a sequence of events set out below. Modern usages in mathematics did evolve from a unifying theme, but this may be difficult to recognize.
A spectrum is a condition or value that is not limited to a specific set of values but can vary infinitely within a continuum.
Spectrum may also refer to:
Spectrum is a novel that takes place in the near future. Contact with aliens allowed humanity to travel between planets through portals. The Keymaster civilization not only provides new technologies to the world but also makes sure that their conditions are fulfilled to the letter: unrestricted access to the Gates for all who are willing. Payment for their use is an unusual story told to a Keymaster by the traveler. The main character of the novel is a private investigator who solves his clients' problems on other planets.
His main strength is his ability to make up the necessary stories needed to gain passage to alien worlds. This earned him the nickname "the Walker" from those who know of him.
Spectrum is the official publication of Adventist Forums and a non-official publication of the Seventh-day Adventist Church, published four times a year. It was established "to encourage Seventh-day Adventist participation in the discussion of contemporary issues from a Christian viewpoint, to look without prejudice at all sides of a subject, to evaluate the merits of diverse views, and to foster intellectual and cultural growth." It presents a theological point of view which tends to be from the liberal progressive Adventist viewpoint.
In mathematics, particularly in functional analysis, the spectrum of a bounded operator is a generalisation of the set of eigenvalues of a matrix. Specifically, a complex number λ is said to be in the spectrum of a bounded linear operator T if λI − T is not invertible, where I is the identity operator. The study of spectra and related properties is known as spectral theory, which has numerous applications, most notably the mathematical formulation of quantum mechanics.
The spectrum of an operator on a finite-dimensional vector space is precisely the set of eigenvalues. However an operator on an infinite-dimensional space may have additional elements in its spectrum, and may have no eigenvalues. For example, consider the right shift operator R on the Hilbert space ℓ,
(x, x, …) ↦ (0, x, x, …).
This has no eigenvalues, since if Rx=λx then by expanding this expression we see that x=0, x=0, etc. On the other hand 0 is in the spectrum because the operator R − 0 (i.e. R itself) is not invertible: it is not surjective since any vector with non-zero first component is not in its range. In fact every bounded linear operator on a complex Banach space must have a non-empty spectrum.
The notion of spectrum extends to densely defined unbounded operators. In this case a complex number λ is said to be in the spectrum of such an operator T:D→X (where D is dense in X) if there is no bounded inverse (λI − T):X→D. If T is a closed operator (which includes the case that T is a bounded operator), boundedness of such inverses follows automatically if the inverse exists at all.
The space of bounded linear operators B(X) on a Banach space X is an example of a unital Banach algebra. Since the definition of the spectrum does not mention any properties of B(X) except those that any such algebra has, the notion of a spectrum may be generalised to this context by using the same definition verbatim.
The Spectrum (later known as CoreStates Spectrum, First Union Spectrum and Wachovia Spectrum) was an indoor arena located in Philadelphia, Pennsylvania. Opened in the fall of 1967 as part of what is now known as the South Philadelphia Sports Complex, after several expansions of its seating capacity it eventually accommodated 18,168 for basketball and 17,380 for ice hockey, arena football, indoor soccer, and indoor lacrosse.
The Spectrum was demolished between November 2010 and May 2011, a little more than a year after the arena's final event (a Pearl Jam concert) took place on October 31, 2009.
Spectrum are an Australian progressive rock band which formed in April 1969 and broke up in April 1973. The original line-up was Mark Kennedy on drums, Lee Neale on organ (ex-Nineteen87), Bill Putt on bass guitar (ex-Lost Souls), and Mike Rudd on guitar and lead vocals (ex- Chants R&B, The Party Machine). In August 1970 Kennedy was replaced by Ray Arnott on drums. These members also performed under the alter-ego, Indelible Murtceps, from 1971 to 1973. Spectrum had a number-one hit, " I'll Be Gone" (January 1971), on the Go-Set National Top 60 singles chart. After Spectrum and Indelible Murtceps disbanded, Putt and Rudd formed Ariel. In 1999 the pair formed Spectrum Plays the Blues, which later trimmed their name back to Spectrum. On 7 August 2013 Bill Putt died, after a heart attack.
Spectrum was an American subscription television channel that was owned and operated by United Cable. Existing during the early 1980s, the service was available in the Chicago, Illinois metropolitan area. It was a direct competitor to and operated in the same manner as ONTV.
Spectrum is an instrumental album released by Steve Howe in 2005. Howe's band includes his son Dylan on drums and Tony Levin ( King Crimson) on bass guitar. The album has guitar-based instrumentals, showing many different genres that influence Howe.
Spectrum is a Canadian drama anthology television miniseries which aired on CBC Television in 1958.
Spectrum is the second album by pianist Cedar Walton recorded in 1968 and released on the Prestige label.
Spectrum is an album by saxophonist Illinois Jacquet recorded in 1965 and originally released on the Argo label. The album was one of the last to be released on Argo before Chess Records changed the name to Cadet and subsequently appeared with both labels.
Spectrum (foaled 8 May 1992) was an Irish-bred, British-trained Thoroughbred racehorse and sire. In a racing career which lasted from October 1994 until August 1996 he ran nine times and won four races. As a three-year-old in 1995 he won the Irish 2000 Guineas but was injured when starting second favourite for the Epsom Derby. He returned in autumn to win the Champion Stakes over ten furlongs at Newmarket. After a disappointing four-year-old season he was retired to stud where he became a successful sire of winners.
Spectrum is the debut album by jazz fusion drummer Billy Cobham. The album contains much influence of the music of Miles Davis and Mahavishnu Orchestra, with whom Cobham had previously collaborated extensively.
Ken Scott, producer and engineer of Spectrum, on recording Cobham's drums: "Bill Cobham's drums were treated in exactly the same way as I recorded every other drummer. I just used more mics: Neumann U67s on toms, D20s or RE20s (at Electric Lady) on the bass drums, Neumann KM54 or 56 on snare, and either STC 4038s or Beyer M160 ribbon mics for the overheads. One other thing: in order to dampen the snare, Bill just laid his wallet on the top head."
Leland Sklar, bassist on Spectrum: "Spectrum is such a benchmark for so many people. There was a sort of fire in it. It was new ground and it wasn't very analytical. It was more flying by the seat of your pants. That's where great accidents happen, which seems impossible these days. We never did more than a couple of takes on any of it. It was more or less a two-day record. It went by so fast."
Tommy Bolin, who would go on to join the hard rock band Deep Purple two years later, plays lead guitar.
The song "Stratus" appears in the video game Grand Theft Auto IV of the radio station " Fusion FM", as well as being the main sample in the Massive Attack hit " Safe from Harm".
The Spectrum (French: Le Spectrum de Montréal) was a concert hall, in Montreal, Quebec, Canada, that closed on August 5, 2007. Opened on October 17, 1982, as the Alouette Theatre, it was briefly renamed Club Montreal before receiving its popular name.
The Spectrum had a capacity of about 1200 and had a " cabaret" setup with table service. A unique effect was the wall mounted lighting which included hundreds of small lightbulbs.
The last show was performed by Michel Rivard, the only performer to have played over one hundred concerts at the venue. The block on which the building stands was slated to be torn down and rebuilt as a combined shopping centre and office complex. The Spectrum had been owned by Équipe Spectra which owns other venues in Montreal.
On February 17, 2008, the borough of Ville Marie voted to proceed with demolition plans and on October 18, 2008, almost 26 years to the day from when it first opened, the Spectrum was torn down.
"Spectrum" is a song by English indie rock band Florence and the Machine from their second studio album Ceremonials (2011). It was written by lead singer Florence Welch and Paul Epworth with production being handled by Epworth. The band premiered the song during a concert at Brooklyn's Creators Project on 15 October 2011, prior to the release of the album. The album version of "Spectrum" is a downtempo orchestral pop, R&B, krautrock and disco song. The accompanying music video for the song premiered on 30 May 2012. It was directed by David LaChapelle and John Byrne.
A remix of the album version of "Spectrum", titled "Spectrum (Say My Name)", was released on 6 July 2012 by Island Records, serving as the fourth single from Ceremonials. Scottish DJ Calvin Harris remixed "Spectrum", producing the uptempo single. "Spectrum (Say My Name)" became the group's first single to peak at number one on the UK Singles Chart, selling 64,816 copies in its first week. It also reached number one in Ireland and Scotland and has peaked within the top five in Australia and New Zealand.
Spectrum was a daily broadcast series on CBS Radio, c. 1970-1992, featuring a varied range of opinions on political and social issues. At first its five-minute segments ran three times a day, and rotated commentary from six print journalists: M. Stanton Evans, Jeffrey St. John, Stewart Alsop, Jon K. Jessup, Nicholas Von Hoffman and Murray Kempton.
Other personalities were soon added to the lineup, including conservative writer Phyllis Schlafly, newspaper editor James Jackson Kilpatrick, political analyst Nick Thimmesch, lifestyle columnist Ellen Goodman, magazine writer Shana Alexander, National Review editor Joseph Sobran, Wall Street Journal editor Vermont Royster, and teenage autobiographer Joyce Maynard (age 19 in 1973).
Spectrum was noted for its introductory taglines (e.g., "Nine distinct viewpoints!" or "Ten opposing points of view!") and the querulous, often breathless delivery of some commentators as they squeezed their heated opinions into the short time-slot. CBS News found a television use for this argumentativeness when it adapted the Spectrum format as a two-person segment, in its 60 Minutes news program. Called "Point-Counter-Point," it initially faced off James J. Kilpatrick (one of Spectrum's "conservatives") against Nicholas von Hoffman (perhaps Spectrum's most strident "liberal"). After von Hoffman was fired for an on-air comment, he was replaced by Spectrum newcomer Shana Alexander.
Spectrum is an annual cultural, sports, literary, science and technology festival of the Indian Institute of Science, Bangalore.
"Spectrum" is a song by Russian-German electronic music producer Zedd. It features the vocals from American singer Matthew Koma. It was released as a single on June 4, 2012, and serves as the first single from Zedd's debut studio album Clarity. It was written by Koma and Zedd.
An extended play of the track – featuring remixes by Armin van Buuren, Arty, Deniz Koyu, as well as Congorock – was released on July 31, 2012. It also features a track titled "Human" (a collaboration with Nicky Romero), which was also released as a single on July 31, 2012.
TVXQ's Yunho, Super Junior's Donghae and Eunhyuk, EXO's Kai and Lay and SHINee's Taemin and Minho under the project name S.M. The Performance released a Korean version, featuring the vocals of Taemin, Donghae and Yunho. This version was released on December 30, 2012 by S.M. Entertainment and the proceeds were given to charity.
There is also a new remix, which features English vocals by Hatsune Miku, made by the Japanese music group, Livetune, which will be featured in the Japanese release of Zedd's album Clarity. Livetune had originally remixed the song as a fan of Zedd's music and Zedd was impressed with the result of the remix and asked for it to be included in the Japanese release as a bonus track.
Usage examples of "spectrum".
CIA analytic report, spectrum of al Qaeda donors, CTC 2003-30199HC, Oct.
This is in itself an undesirable simplification, for it is impossible to reconstitute the infinity of real shades by combinations of fundamental colours each representing the homogeneous shore, which each region of the spectrum finally becomes.
When we interpret the arrangement of numbers found there on a nominalistic basis, as is done when the axis- and angle-relationships of crystals are reduced to a mere propinquity of the atoms distributed like a grid in space, or when the difference in angle of the position of the various colours in the spectrum is reduced to mere differences in frequency of the electromagnetic oscillations in a hypothetical ether - then we bar the way to the comprehension not only of number itself, as a quality among qualities, but also of all other qualities in nature.
From the apparently indivisible quanta of physical energy, to the boundaries between the solid, liquid and gaseous states - the manyness of the energy patterns is prevented from becoming one homogeneous and ill-defined spectrum by threshold effects.
The crucial point here is that, just like the average path length, the clustering plunges almost a millionfold as we morph the network from one end of the spectrum to the other.
The gadget Missel made works, so we can probably use electrical or nervous spectrum weaponry.
As well as these there was of course the brilliant spectrum of officers - the particoloured Scots were particularly admired - people from the various ministries in their comparatively subfusc court dress, and civilians of all sorts, the levee being a wonderful place for discreet contacts, for the gathering of information, and for learning just how influence and favour waxed or waned.
Light from the tritiated stilbene is strongest in regions of the spectrum where the eye is least sensitive, but where phototubes are most sensitive.
The exception was the plasmatic spark on the moon, but its thermonuclear spectrum was continuous.
Plattnerite itself, and so emerges with wavelengths appropriate to the greener part of the spectrum but still, enough of the original sodium light passes through the Plattnerite without scattering to allow the interference phenomenon to persist.
But at the other end of the spectrum was Jon Postel, the unsung hero of networking.
Much of the current state of preparedness arises from past programs aimed at a wide spectrum of emergencies, particularly civil defense against nuclear attack.
Rarely, though, for such a handsome person, he was equally liked by men, and that, I thought, lay somewhere in his manic-depressive spectrum, from which he offered a friendship that could be wildly scatty but had no sex in it.
There was little out there now but smoldering ash, but the sensu was still getting a reading high into the nines and the teleidoscope was turning it, turning it, combining colors and sending them back in some new spectral spectrum.
He stood before a wall of gates, rather like the transfer platform, but before him, to the right, to the left, even above, were massed arrays of conical vats, each transparent and filled with a liquid, some cloudy, others transparent, representing a full spectrum of colours.