Incandescent lamp is a common light in daily life.The principle of luminescence is based on the phenomenon of thermal radiati...

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The flax shoots grow.Hemp is planted more often in the early spring when the soil temperature is above 8 C at 5 cm below the...

LED has many different characteristics from other electric light sources, which also makes it the first choice of energy savi...

Referenced standards and specifications :lEC60958-1 General requirements and tests for luminariesIEC62471:2006 The photo-biol...