radiant flux(redirected from PHIE)
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radiant fluxThe total power emitted or received by a body in the form of radiation. It is measured in watts.
Radiant flux is radiant energy per unit of time. The standard unit for measuring radiant flux is the watt (W), which is defined as Joules per second (J/sec).
radiant flux[′rād·ē·ənt ′fləks]
The time rate of flow of radiant energy.