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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.
[100] [101] In 2007, the state of California introduced legislation to phase out the use of incandescent bulbs by 2018. The bill established a minimum standard of twenty-five lumens per watt by 2013 and sixty lumens per watt by 2018.
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 ...
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In December 2023, California secretary of state Shirley Weber ruled that Donald Trump was eligible to be on the ballot in the 2024 presidential election. [17] In July 2024, Joe Biden , the president of the United States since 2021, concluded his presidential campaign, endorsing Kamala Harris , the vice president of the United States since 2021 ...
Portable radio, HF 100W AM/CW/USB/RTTY, powered by AC supply, battery or generator, transported in two boxes including all accessories for operation: AN/PRC-49: Survival radio: AN/PRC-63: Survival radio: AN/PRC-65: Portable transceiver, Ultra high frequency (UHF)-band, 1,120 channels, 100-156 mc, 6 lbs: Simmonds Precision Products AN/PRC-66
The Capacitance Electronic Disc (CED) is an analog video disc playback system developed by Radio Corporation of America (RCA), in which video and audio could be played back on a TV set using a special stylus and high-density groove system similar to phonograph records.
How satellite internet works. Satellite Internet generally relies on three primary components: a satellite – historically in geostationary orbit (or GEO) but now increasingly in Low Earth orbit (LEO) or Medium Earth orbit MEO) [23] – a number of ground stations known as gateways that relay Internet data to and from the satellite via radio waves (), and further ground stations to serve each ...