في الواقع تظهر لك دوار البحر led википедия ليل اقرأ إعطاء
File:LED, 5mm, green (en).svg - Wikipedia
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English: Detailed photograph of a Maglite 4-D flashlight with a 3-watt Luxeon LED module installed. The inset in the lower right corner is a macro shot of the LED module with the
The spectrum of Solar Radiation... | Download Scientific Diagram
File:LED, 5mm, green (en).svg - Wikipedia
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Nobel Prize - Isamu Akasaki (赤崎 勇), Hiroshi Amano (天野 浩) and Shuji Nakamura (中村修二) invented a new energy-efficient and environmentally friendly light source – the blue light-emitting diode (LED). The Nobel