FAQ

What is the Lumen Reaching Working Plane?
The Lumen reaching working plane is defined as the amount of luminous flux is given out in a space represented by one unit of solid angle by a source. Lumen Reaching Working Plane is usually measured using the Candela for Luminous Intensity. Note that the value of Lumen Reaching Working Plane is always negative.
Can the Lumen Reaching Working Plane be negative?
Yes, the Lumen Reaching Working Plane, measured in Luminous Intensity can be negative.
What unit is used to measure Lumen Reaching Working Plane?
Lumen Reaching Working Plane is usually measured using the Candela[cd] for Luminous Intensity. Candle (International)[cd], Decimal Candle[cd], Hefner Candle[cd] are the few other units in which Lumen Reaching Working Plane can be measured.
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