单词	photocell
释义	photocell noun pho·​to·​cell ˈfō-tə-ˌsel  : photoelectric cell Example Sentences Recent Examples on the Web In short: The missile would adjust course midflight to keep the target’s heat signature reflected onto a sensitive photocell, making the missile literally seek heat. Alex Hollings, Popular Mechanics, 21 Mar. 2021 Then a buddy at work, a master electrician, devised a photocell to power the lights and reduce battery hassle. Zaz Hollander, Anchorage Daily News, 28 Nov. 2019 The new light fixtures have a dusk-to-dawn photocell and 100-watt LED light bulbs. Benny L. Kass, chicagotribune.com, 14 Feb. 2018 To reverse engineer the wave, Adafruit measured the brightness of a Mac LED using an oscilloscope, a photocell, some extra circuitry and — of course — duct tape. Charlie Sorrel, WIRED, 16 June 2011 Word History Etymology International Scientific Vocabulary First Known Use 1891, in the meaning defined above
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