Spectrum (disambiguation)

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:

Physics

 * Electromagnetic spectrum
 * Visible spectrum or optical spectrum, a subset of the electromagnetic spectrum
 * Emission spectrum, observed in light
 * Absorption spectrum, observed in light
 * Radio spectrum, radio frequency subset of the electromagnetic spectrum
 * Stellar spectrum, the combination of continuum, absorption, and emission lines produced by a star
 * Energy spectrum, of a collection of particles (particle physics)
 * Frequency spectrum, of a signal
 * Power spectrum, of a signal

Medicine

 * Spectrum disorder, a group of mental disorders of similar appearance or thought to share an underlying mechanism
 * Autism spectrum, encompassing autism, Asperger's, etc.
 * Antimicrobial spectrum, the range of microorganisms an antibiotic can kill or inhibit

Mathematics
In mathematics, spectrum frequently denotes a set of numbers associated to an object:
 * Spectrum of a matrix, its set of eigenvalues, in linear algebra
 * Spectrum (functional analysis), a generalization of the concept of matrix eigenvalues to operators
 * Spectrum of a graph, studied in spectral graph theory
 * Pseudospectrum
 * Spectrum of a polygon, the set of numbers of possible equidissections
 * Spectrum of a sentence, in mathematical logic
 * Spectrum of a theory, in mathematical logic

There are also several other, unrelated meanings:
 * Spectrum (topology), the fundamental object of study in stable homotopy theory
 * Spectrum of a C*-algebra, a kind of dual object
 * Spectrum of a ring, the set of its prime ideals, in commutative algebra

Arts and entertainment

 * Spectrum (brand), a brand name used by Charter Communications for their telecommunication services, including:
 * Spectrum News, a group of six cable news channels
 * Spectrum Sports, a group of nine regional sports networks in the US
 * Spectrum TV Stream, a streaming service

Publications

 * IEEE Spectrum, a magazine by the Institute of Electrical and Electronics Engineers
 * Spectrum (magazine), an independent Seventh-day Adventist magazine
 * Spectrum (newspaper), a defunct Toledo, Ohio weekly newspaper
 * Spectrum, a news website published by the Simons Foundation Autism Research Initiative
 * The Spectrum (Utah), also known as The Spectrum & Daily News, a Gannett newspaper in St. George, Utah
 * Spectrum (novel), a 2002 novel by Russian author Sergey Lukyanenko
 * Spectrum, a magazine published with Scotland on Sunday
 * Spectrum, a liftout in The Sydney Morning Herald

Student newspapers

 * The Spectrum (USLS), the student newspaper of the University of St. La Salle in the Philippines
 * The Spectrum (NDSU), the student newspaper of the North Dakota State University in the United States
 * The Spectrum (University at Buffalo), the student newspaper of the State University of New York at Buffalo

Television

 * Spectrum (TV channel), a defunct Chicago-area pay television broadcaster founded by United Cable
 * Spectrum (TV series), a 1958 Canadian television series
 * Spectrum (radio program), a daily broadcast series on CBS Radio, c. 1970–1992

Music

 * The Spectrum (Sirius XM), a music channel on Sirius Satellite Radio

Groups

 * Spectrum (band), an Australian group of the 1970s led by Mike Rudd
 * Spectrum (group), a South Korean boy group formed in 2018
 * Spectrum, a British band led by Peter Kember
 * Spectrum, a bluegrass band that included Béla Fleck and Jimmy Gaudreau
 * Spectrum (The Carpenters), 1960s jazz band led by Richard and Karen Carpenter
 * The Spectrum (1964–1970), a London-based pop group coincidentally providing the closing theme for the spectrum-themed TV show Captain Scarlet and the Mysterons

Albums

 * Spectrum (Billy Cobham album), debut album of fusion drummer Billy Cobham
 * Spectrum (Cedar Walton album), the second album by jazz pianist Cedar Walton
 * Spectrum (Jega album), debut album of electronic musician Jega
 * Spectrum (Steve Howe album), 2005
 * Spectrum (Illinois Jacquet album), 1965
 * Spectrum (Westlife album), 2019
 * The Spectrum (album), of 2017 by Daley
 * Spectrum (Hiromi album), 2019
 * Spectrum, by iamjakehill, 2017

Songs

 * "Spectrum (Say My Name)", a 2012 song by British indie rock band Florence and the Machine
 * "Spectrum" (Zedd song), a 2012 song by German electronic dance music producer Zedd; also covered by SM The Performance
 * "Spectrum", a 2017 song by musical artist Muzz

Other arts and entertainment

 * Spectrum, a news website founded by the Simons Foundation Autism Research Initiative
 * Spectrum, an Irish radio program hosted by Melanie Verwoerd in 2005
 * Monica Rambeau, a Marvel Comics character who uses the name Spectrum
 * Spectrum, the worldwide security organisation in the 1960s TV series Captain Scarlet and the Mysterons
 * Gaylactic Spectrum Awards or Spectrums, a literary award
 * Spectrum Award, in fantasy, science fiction, and horror artwork

Buildings and structures

 * Spectrum (Montreal), a defunct concert venue in Canada
 * Spectrum London, an art gallery in England
 * Guildford Spectrum, a leisure complex in Guildford, England
 * Smith Spectrum, a sports arena in Logan, Utah, US
 * Spectrum (arena), a former arena in Philadelphia, Pennsylvania, US
 * Spectrum Stadium, near Orlando, Florida, US
 * Northlands Spectrum, later known as Northlands Park, a horse racing track in Edmonton, Alberta, Canada

Organizations

 * Spectrum Aircraft, a Canadian ultralight aircraft manufacturer
 * Spectrum Aeronautical, a US-based manufacturer of very light jets
 * Spectrum Animation, a defunct Japanese animation studio
 * Spectrum Brands, an American home-essentials company
 * Het Spectrum, a Dutch publishing company
 * Spectrum Pharmaceuticals, an American biopharmaceutical company
 * Spectrum (Amsterdam) (formerly Librije's Zusje), Michelin-starred restaurant in Amsterdam, the Netherlands

Products

 * Spectrum (racing car), a series of Australian open wheel racing cars manufactured by Borland Racing Developments
 * Geo Spectrum or Chevrolet Spectrum, a sedan and hatchback marketed in North America
 * ZX Spectrum, an early British home computer by Sinclair
 * Spectrum, a brand of printer paper owned by Georgia-Pacific

Other uses

 * Economic spectrum, disparities between social classes
 * Political spectrum, of opinion
 * Spectrum Range, a mountain range in British Columbia, Canada
 * Spectrum (horse), a thoroughbred racehorse
 * SPECTRUM Standard, a Museum Collections Management Standard developed by the Collections Trust