What is Spectrum (disambiguation)?
{{wiktionary|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 [[asteroid#Spectral classification|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)|''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]