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Screens for TV and computer displays can be made thinner using LEDs for backlighting. [96] LEDs are small, durable and need little power, so they are used in handheld devices such as flashlights. LED strobe lights or camera flashes operate at a safe, low voltage, instead of the 250+ volts commonly found in xenon flashlamp-based
LED development began with infrared and red devices made with gallium arsenide. Advances in materials science have enabled making devices with ever-shorter wavelengths, emitting light in a variety of colors. LEDs are usually built on an n-type substrate, with an electrode attached to the p-type layer deposited on its surface.
The first blue-violet LED, using magnesium-doped gallium nitride was made at Stanford University in 1972 by Herb Maruska and Wally Rhines, doctoral students in materials science and engineering. [32] [33] At the time Maruska was on leave from RCA Laboratories, where he collaborated with Jacques Pankove on related work. In 1971, the year after ...
An organic light-emitting diode (OLED), also known as organic electroluminescent (organic EL) diode, [1] [2] is a type of light-emitting diode (LED) in which the emissive electroluminescent layer is an organic compound film that emits light in response to an electric current.
In a record, five of the 25 movies inducted this year into the National Film Registry at the Library of Congress feature prominent Latino lead actors and storylines. These are “Spy Kids ...
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
Apple has made them too, and they are cutting back,” says David A. Gross, who runs the movie consulting firm Franchise Entertainment Research. As Gross suggests, most streamers have wised up.
Company founders Jonas Katzenstein and Maximilian Leo talk to Variety about how they made the shift from foreign-language arthouse fare to English-language elevated genre movies, with stars attached.