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LUMEN TO WATT
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$37.99 Samsung Achieves 220 Lumens per Watt
File:Lumen Watt Tabelle WIKI 001.jpg
conversion formula from watt to lumen
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lumen to watt
lumen to watt
lumen to watt
lumen to watt
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$37.99 Samsung Achieves 220 Lumens per Watt 
File:Lumen Watt Tabelle WIKI 001.jpg 
