radiant energy

Noun
  1. Energy that is transmitted in the form of (electromagnetic) radiation;
    Energy that exists in the absence of matter (synset 111519491)
    is a type of: energy, free energy - (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs
    subtypes: luminous energy - the energy associated with visible light

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