LED(129 articles)
LED or light-emitting diode is a two-lead semiconductor light source. first created by russian inventor oleg losev in 1927, 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.
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happening now! swiss mobility specialist schindler introduces its 2025 innovation, the schindler X8 elevator, bringing the company’s revolutionary design directly to cities like milan and basel.
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