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How LED's work - A light-emitting diode (LED) is a two-lead semiconductor light source. It is a pn-junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.
"IDEE SPECIALI" Come realizzare Fiori, Farfalle e tanto altro, riciclando bottiglie e flaconi di plastica
Hidetsugu Yagi (八木 秀次 Yagi Hidetsugu, January 28, 1886 - January 19, 1976, born in Osaka City) was a Japanese electrical engineer. The Yagi antenna, patented in 1926, allows directional communication using electromagnetic waves
(200) 04C043PPESSS 4-40 x 7/16" PHILIPS PAN HEAD SCREW EXT SEMS STAINLESS STEEL
(200) 04C043PPESSS 4-40 x 7/16" PHILIPS PAN HEAD SCREW EXT SEMS STAINLESS STEEL #UNKNOWN