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illuminance |
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illuminance: see photometry photometry (fōtŏm`ətrē) ..... Click the link for more information. . illuminance [ə′lü·mə·nəns] (optics) The density of the luminous flux on a surface. Also known as illumination; luminous flux density. Illuminance A term expressing the density of luminous flux incident on a surface. This word has been proposed by the Colorimetry Committee of the Optical Society of America to replace the term illumination. The definitions are the same. The symbol of illumination is E, and the equation is E = dF/dA, where A is the area of the illuminated surface and F is the luminous flux. See Luminous flux, Photometry How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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