Calculating Lumens?

Answer

Lumen is an efficient rating that is given to light bulbs to establish how much light they produce for each watt of energy they use. To calculate find the number for lumen output on the light bulb's box. Divide the light bulb's lumen output by the number of watts the bulb needs.
Q&A Related to "Calculating Lumens?"
1. Determine the lighting intensity level you need. According to the Illuminating Engineering Society of North America (IESNA) most people prefer a level of 10- to 20-foot candles
http://www.ehow.com/how_6596024_calculate-lumens.h...
Lumens are the amount of light produced by a bulb. Find the number for lumen output on the light bulb's box. Wattage is the amount of electricity needed to light the bulb. The higher
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Da-Lite, the projector screen company has a great calculator here and even includes a brand and model reference.
http://wiki.answers.com/Q/How_to_calculate_how_man...
Discover the wattage of the bulb either by looking on the box or at the actual bulb. Discover the number of lumens the bulb produces by looking on the box. This may be written as
http://www.ehow.co.uk/how_5019634_calculate-effica...
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