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A round Induction fluorescent lamp. The induction lamp, electrodeless lamp, or electrodeless induction lamp is a gas-discharge lamp in which an electric or magnetic field transfers the power required to generate light from outside the lamp envelope to the gas inside.
The round device under the lamp is the ... They have been commercially available since 1990. A current is induced into the gas column using electromagnetic induction ...
Between 1940 and 1956, all U.S. cars had to have two 7-inch (178 mm) round headlamps with dual filaments, so each lamp provided both a high and a low beam light distribution. In 1957, a system of four sealed-beam headlamps—two per side, of 5 + 3 / 4 inches (146 mm) diameter, was allowed in some U.S. states.
In 2009, PSE&G in New Jersey became the first utility in the US to use induction fluorescent lamps to replace mercury vapor lamps, in 220 municipalities. [24] The induction lamps were expected to last 100,000 hours before requiring maintenance and consume 30 to 40 percent less electricity, thereby saving an estimated $1 million annually. [24]
These lamps produce wide or narrow band UV-B radiation 10 BL Black-Light lamps: Black light lamps give off long-wave UV-A radiation of around 350-400 nm. They are often used to attract insects to traps. Unlike black light blue lamps, these lamps do not use wood's glass. They use regular soda-lime glass and emit more visible light than BLB lamps.
(Reuters) - U.S. President-elect Donald Trump in an interview published on Thursday said he will be talking to Robert F. Kennedy Jr., his nominee to run the Department of Health and Human Services ...
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