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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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L
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Lumen
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1992-09-03
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310b
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9 lines
SI unit (symbol lm) of luminous flux (the
amount of light passing through an area per
second). The lumen is defined in terms of the
light falling on a unit area at a unit
distance from a light source of luminous
intensity of one candela. One lumen at a
wavelength of 5,550 a3b3ngstroms equals
0.0014706 watts.