The maximum brightness of the movie projector in the theater is 3600 lumens. An expert uses simple and low-cost materialsHandmade a lighting lamp with a brightness of 7200 lumens, using 8 high-power 100-watt LEDs. To avoid overheating and damaging the lamps, he used water cooling to dissipate heat. How bright is 7200 lumens? Even if it is illuminated to a place 5 kilometers away, it will be like daytime.
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