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:

Physical science

• Continuous spectrum of any physical quantity that can change smoothly
• Discrete spectrum (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
  • Spectral class of stars in Stellar classification
  • Spectral class of asteroids
  • Spectral power distribution of an illuminant
  • Spectral flux density of a light-source
• Energy spectrum of a collection of particles (particle physics)
• Frequency spectrum of a signal
• Power spectrum of a signal
• Harmonic series (music) (spectrum of sound energy), of a musical note

Social and medical sciences

• Antibiotic classification
• Economic spectrum, disparities between social classes
• Political spectrum of opinion
• Spectrum disorder, in psychiatry

Mathematics

• Pseudospectrum
• Spectrum of a matrix, in linear algebra
• Spectrum (functional analysis), a generalization of the concept of matrix eigenvalues to operators
• Spectrum (homotopy theory)
• Spectrum of a C*-algebra
• Spectrum of a graph, studied in spectral graph theory
• Spectrum of a polygon, the set of numbers of possible equidissections
• Spectrum of a ring, in commutative algebra
• Spectrum of a sentence, in mathematical logic
• Spectrum of a theory, in mathematical logic
• Stone space of boolean algebra
• Beatty sequence (non-standard name)

Media

• IEEE Spectrum, a magazine
• Spectrum (magazine), an independent Seventh-day Adventist magazine
• Spectrum (TV channel), a defunct Chicago-area pay television broadcaster founded by United Cable
• Spectrum (newspaper), a defunct Toledo, Ohio weekly newspaper
• The Spectrum (Utah), a Gannett newspaper in St. George, Utah
• Spectrum (1958 TV series), a Canadian television series
• Spectrum (novel), a 2002 novel by Russian author Sergey Lukyanenko
• Spectrum (radio program), a daily broadcast series on CBS Radio, c. 1970–1992
• Spectrum liftout in The Sydney Morning Herald
• Spectral (film), an upcoming American film

Student newspapers

• The Spectrum (USLS), the student newspaper of the University of St. La Salle in the Philippines
• NDSU Spectrum, the student newspaper of the North Dakota State University
• The Spectrum (newspaper), the student newspaper of the University at Buffalo

Music

• Spectral music
• Peter Kember's band
• Spectrum (band), an Australian group of the 1970s led by Mike Rudd
• Spectral (album),a 2004 album by metal band Skyfire
• 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
• Spectral (Dave Rempis album), 2014 jazz album of Dave Rempis, Darren Johnston, and Larry Ochs
• "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
• The Spectrum (Sirius XM), a music channel on Sirius Satellite Radio

Buildings and structures

• Spectrum (Montreal), a defunct concert venue and local landmark
• Spectrum London, UK, an art gallery
• Guildford Spectrum, a leisure complex in Guildford, England
• Smith Spectrum, a sports arena in Logan, Utah, U.S.A.
• Spectrum (arena), a former sports arena in Philadelphia, Pennsylvania, U.S.A.
• Spectrum, North York, a condo development in North York, Toronto
• Spectrum Stadium, one of the major indoor sports venues in Darwin, Northern Territory

Business

Companies

• Spectrum Aircraft, a Canadian ultralight aircraft manufacturer
• Spectrum Aeronautical, a US-based manufacturer of very light jets
• Spectrum Animation, a Japanese animation studio
• Het Spectrum, a Dutch publishing company
• Spectrum Pharmaceuticals, an American biopharmaceutical company

Products

• Spectrum (racing car), a series of Australian open wheel racing cars manufactured by Borland Racing Developments
• Chevy Spectrum, a North American car also sold as the Geo Spectrum
• Sinclair ZX Spectrum, an early British home computer
• Spectrum, a brand of printer paper owned by Georgia-Pacific
• Spectrum, the front-facing branding for the television, internet and telephone services offered by Charter Communications; comparable to Comcast's "Xfinity" branding

Other

• Spectrum Range, a mountain range in British Columbia, Canada
• Gaylactic Spectrum Awards or Spectrums, a literary award
• Spectrum (horse), a thoroughbred racehorse
• Spectrum, the worldwide security organisation in the 1960s TV series Captain Scarlet and the Mysterons
• The SPECTRUM Standard, a Museum Collections Management Standard developed by the Collections Trust
• Spectrum Fantastic Art Live, an annual fantasy art festival and its related Spectrum Award

See also

• Spector (disambiguation) or Spektor
• Spectre (disambiguation) or Specter
• Spectra (disambiguation)
• Spektrum (disambiguation)
• The Spectrum (disambiguation)