A recent study suggests that our home galaxy, the Milky Way, cannot be seen by one-third of humanity. Why? Millions of city lamps brighten our cities every night, but only part of their light is used ...
Semlight releases new-generation 65W E40 LED street light using PCB with DLC (diamond like carbon). Heat dissipation is always a big problem for LED engineers; with temperature incerases the luminance ...
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