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 sciencesThe electromagnetic spectrumThe visible spectrum or optical spectrum, a subset of the electromagnetic spectrumAn emission spectrum observed in lightAn absorption spectrum observed in lightThe spectral class of stars in Stellar classificationThe spectral class of asteroidsThe spectral power distribution of an illuminantThe energy spectrum of a collection of particles (particle physics)The frequency spectrum of a signalThe power spectrum of a signalThe timbre (spectrum of sound energy) of a musical noteThe spectrum of activity of a chemical
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