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:max_bytes(150000):strip_icc()/phillps-5b0fd9a921504c6b8b7bff82e7e06edb.jpg "US Government to Crank Lightbulb Efficiency Up to 120 Lumens Per Watt")
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White LED lights with 135 Lumens per Watt About Ten Times Better than Incandescent | NextBigFuture.com
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a. Lumen per watt comparison. b. Overall lighting efficiency (W/lm). | Download Scientific Diagram
Understanding LUMENS PER WATT... - Paragon Lighting Myanmar | Facebook
