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 refer more specifically to:

In physical sciences

• The electromagnetic spectrum
  • The visible spectrum or optical spectrum, a subset of the electromagnetic spectrum
  • An emission spectrum observed in light
  • An absorption spectrum observed in light
  • The spectral class of stars in Stellar classification
  • The spectral class of asteroids
  • The spectral power distribution of an illuminant
• The energy spectrum of a collection of particles (particle physics)
• The frequency spectrum of a signal
• The power spectrum of a signal
• The timbre (spectrum of sound energy) of a musical note
• The spectrum of activity of a chemical

In social and medical sciences

• The economic spectrum
• The political spectrum of opinion
• A spectrum disorder, in psychiatry

In mathematics

• The spectrum of a matrix, in linear algebra
• The spectrum of an operator, in functional analysis (a generalisation of the spectrum of a matrix)
• The spectrum of a ring, in commutative algebra
• The spectrum of a C*-algebra
• A spectrum (homotopy theory)
• The Stone space of Boolean algebra
• The spectrum of a theory, in mathematical logic

In media

• IEEE Spectrum, a magazine
• Spectrum (magazine), published by the Seventh-day Adventist Church
• The Spectrum (Sirius), a music channel on Sirius Satellite Radio
• 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
• Spectrum (TV channel), a defunct Chicago-area pay television broadcaster founded by United Cable
• Spectrum (band), an Australian group of the 1970s led by Mike Rudd
• Spectrum, a band headed by Peter Kember
• Spectrum (album), debut album of fusion drummer, Billy Cobham

Buildings

• The Smith Spectrum, a sports arena in Logan, Utah, U.S.A.
• The Wachovia Spectrum, formerly The Spectrum, a sports arena in Philadelphia, Pennsylvania, U.S.A.
• Guildford Spectrum, a leisure complex in Guildford, England
• Spectrum London, UK, an art gallery
• Spectrum (Montreal), a defunct concert venue and local landmark.

Other

• The ZX Spectrum, an early British home computer
• Het Spectrum, a Dutch publishing company
• Spectrum Strategy Consultants, a management consulting firm
• The Gaylactic Spectrum Awards or Spectrums, a literary award
• Spectrum (racing car), a series of Australian open wheel racing cars manufactured by Borland Racing Developments