| 单词 | luminous flux |
| 释义 | luminous fluxnoun Optics.the rate of transmission of luminous energy: expressed in lumens. Origin of luminous fluxFirst recorded in 1925–30 Words nearby luminous fluxluminous efficacy, luminous efficiency, luminous emittance, luminous energy, luminous exitance, luminous flux, luminous flux density, luminous intensity, luminous paint, luminous range, lumirhodopsin Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for luminous fluxluminous flux nouna 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 lumensSymbol: Φ v Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for luminous fluxluminous flux [ lōō′mə-nəs ] 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. See also luminous intensity. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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