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Luminous flux |
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| Date: 2012-03-21 |
Beam (flux) - that symbol f, unit lumen (lm)
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Beam (flux, or the luminous light volume)
Beam (flux) is the amount of light emitted per second sum, the simple volume that is light, that symbol is f, while the unit is lumen (lm).
Beam (flux) can be defined as: light emitting amount per second issued by the optical sensitivity of human eyes based on the measured quantity.
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