Definitions for radiant energy
Random House Webster's College Dictionary
energy transmitted in wave motion, esp. electromagnetic wave motion.
Ref: light1 (def. 2a). 1 1 2 1
Origin of radiant energy:
energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter
Energy in a form that can radiate, generally electromagnetic energy.
The Standard Electrical Dictionary
Energy, generally existing in the luminiferous ether, kinetic and exercised in wave transmission, and rendered sensible by conversion of its energy into some other form of energy, such as thermal energy. If the ether waves are sufficiently short and not too short, they directly affect the optic nerve and are known as light waves; they may be so short as to be inappreciable by the eye, yet possess the power of determining chemical change, when they are known as actinic waves; they may be also so long as to be inappreciable by the eye, when they may be heat-producing waves, or obscure waves. Other forms of energy may be radiant, as sound energy dispersed by the air, and gravitational energy, whose connection with the ether has not yet been demonstrated.
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