Spectrum (disambiguation)

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Simple English Wiktionary has a dictionary definition (word meaning) for:

spectrum

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 spectral class of asteroids
  • 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 timbre (spectrum of sound energy) of a musical note
• The energy spectrum of a collection of particles (particle physics)
• The frequency spectrum of a signal
• The power spectrum of a signal
• The spectrum of activity of a chemical

Proper nouns

• The ZX Spectrum, an early British home computer
• IEEE Spectrum, a magazine
• Spectrum (magazine), published by the Seventh-day Adventist Church
• Spectrum Value Partners, a management consulting firm
• Spectrum (band), an Australian group of the 1970s led by Mike Rudd
• Spectrum, a band headed by Peter Kember
• 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
• The Gaylactic Spectrum Awards or Spectrums, a literary award
• Spectrum (album), debut album of fusion drummer, Billy Cobham

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

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