Lumen

Lumen

Lumen is a term used to describe measurement of light conversion. One lumen equals one candela across one Ste-radian, and is a measure of luminous flux, which is adjusted to the human eye’s perception of the light’s power. Lighting efficiency or efficacy is measured in lumens per watt. Incandescent typically have an efficacy in the range 15–20 lm/watt. Ultra-high efficacy lighting can achieve over 120 lm/watt.


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Kenneth Lyngaas
Sustainable fashion designer & eco-philosopher Sustainable fashion dedicated the twenty-first-century green living, design for change through system thinking, eco philosophy, spirituality, and sustainability.
Kenneth Lyngaas
Kenneth Lyngaas
Kenneth Lyngaas
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