#electromagnetic_spectrum__electromagneticspectrum  the entire frequency range of electromagnetic waves
  part:  radio_frequency  extremely_low_frequency  very_low_frequency  low_frequency  medium_frequency  high_frequency  very_high_frequency  ultrahigh_frequency  superhigh_frequency  extremely_high_frequency  actinic_radiation  gamma_radiation  infrared_spectrum  visible_light  line.electromagnetic_radiation  microwave  microwave_spectrum  radio_spectrum  ultraviolet_spectrum  visible_spectrum
  supertype:  spectrum  an ordered array of the components of an emission or wave
     supertype:  array  an orderly arrangement: "an array of troops in battle order"
        supertype:  arrangement  an orderly grouping (of things or persons)
           supertype:  group__grouping  any number of entities (members) considered as a unit
              supertype:  collection  something gathering separated things (entities/situations)
                 supertype:  divisible_entity__divisibleentity  many classifications under this category are application-dependant
                    supertype:  entity  something that can be "involved" in a situation
                       supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                    supertype:  divisible_thing__divisiblething
                       supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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