spectrum

Noun
  1. is a type of: array - an orderly arrangement
    subtypes:
    • absorption spectrum - the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
    • action spectrum - the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation
    • atomic spectrum - (physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element
    • electromagnetic spectrum - the entire frequency range of electromagnetic waves
    • emission spectrum - spectrum of electromagnetic radiation emitted by a self-luminous source
    • infrared spectrum - the spectrum of infrared radiation
    • line spectrum - a spectrum in which energy is concentrated at particular wavelengths; produced by excited atoms and ions as they fall back to a lower energy level
    • mass spectrum - a distribution of ions as shown by a mass spectrograph or a mass spectrometer
    • microwave spectrum - the part of the electromagnetic spectrum corresponding to microwaves
    • radio spectrum, radio-frequency spectrum - the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television
    • acoustic spectrum, sound spectrum - the distribution of energy as a function of frequency for a particular sound source
    • ultraviolet spectrum - the spectrum of ultraviolet radiation
    • color spectrum, visible spectrum - the distribution of colors produced when light is dispersed by a prism
    has: spectrum line - an isolated component of a spectrum formed by radiation at a uniform frequency
  2. is a type of: ambit, compass, orbit, range, reach, scope - an area in which something acts or operates or has power or control:

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