luminous flux

American  

noun

Optics.

1. the rate of transmission of luminous energy: expressed in lumens.

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luminous flux British  

noun

1.  Φv.  a measure of the rate of flow of luminous energy, evaluated according to its ability to produce a visual sensation. For a monochromatic light it is the radiant flux multiplied by the spectral luminous efficiency of the light. It is measured in lumens

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luminous flux Scientific  

/ lo̅o̅′mə-nəs /

1. A measure of the radiant power of light emitted from a source without regard for the direction in which it is emitted. It is measured in lumens.

2. See also luminous intensity

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Etymology

Origin of luminous flux

First recorded in 1925–30

Example Sentences

The contraption didn’t electrocute anybody or implode in splinters of flying glass, as earlier models had tended to do, and obligingly produced a diminutive version of the aurora’s luminous flux, dazzling the King.

From The New Yorker