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A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs.
LED display of a TI-30 scientific calculator (c. 1978), which uses plastic lenses to increase the visible digit size X-Ray of a 1970s 8-digit LED calculator display. Until 1968, visible and infrared LEDs were extremely costly, on the order of US$200 per unit, and so had little practical use. [23]
An LED-backlit LCD is a liquid-crystal display that uses LEDs for backlighting instead of traditional cold cathode fluorescent (CCFL) backlighting. [1] LED-backlit displays use the same TFT LCD (thin-film-transistor liquid-crystal display) technologies as CCFL-backlit LCDs, but offer a variety of advantages over them.
At the time, many considered creating a GaN LED too difficult to produce; therefore, Nakamura was fortunate that the founder of Nichia, Nobuo Ogawa (1912–2002), was willing to support and fund his GaN project. [9] [10] However, the senior Ogawa ceded the presidency to his son-in-law Eiji Ogawa (in 1989). The company under Eiji's direction ...
"We really shone a light on this city and the devastation that happened." Frazer Harrison/Getty. Kanye West and Bianca Censori at the Grammys in Los Angeles on Feb. 2, 2025.
Fin Smith's match-winning conversion of the last-gasp try he set up lifted England over Six Nations title favorite France 26-25 in a Twickenham thriller on Saturday. England led for the first time ...