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Parent Categories

entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

abstraction, abstract entity go
a general concept formed by extracting common features from specific examples

group, grouping go
any number of entities (members) considered as a unit

arrangement go
an orderly grouping (of things or persons) considered as a unit

array go
an orderly arrangement

spectrum
an ordered array of the components of an emission or wave

noun.phenomenon

13 Subcategories

absorption spectrum go
the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
action spectrum go
the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation
atomic spectrum go
(physics) a spectrum of radiation caused by electron transitions within an atom
electromagnetic spectrum go
the entire frequency range of electromagnetic waves
emission spectrum go
spectrum of electromagnetic radiation emitted by a self-luminous source
infrared spectrum go
the spectrum of infrared radiation
line spectrum go
a spectrum in which energy is concentrated at particular wavelengths
mass spectrum go
a distribution of ions as shown by a mass spectrograph or a mass spectrometer
microwave spectrum go
the part of the electromagnetic spectrum corresponding to microwaves
radio spectrum, radio-frequency spectrum go
the entire spectrum of electromagnetic frequencies used for communications
sound spectrum, acoustic spectrum go
the distribution of energy as a function of frequency for a particular sound source
ultraviolet spectrum go
the spectrum of ultraviolet radiation
visible spectrum, color spectrum go
the distribution of colors produced when light is dispersed by a prism