单词	magnetron
释义	magnetron noun mag·​ne·​tron ˈmag-nə-ˌträn  : a vacuum tube in which the flow of electrons is controlled by an applied magnetic field to generate power at microwave frequencies Example Sentences Recent Examples on the Web The magnetron emits electromagnetic waves in a continuous motion to generate enough energy to heat food, says Ali Manning, food scientist and consultant. Sarra Sedghi, Bon Appétit, 15 July 2022 Understandably curious just what the heck had happened, Spencer ran another test with the magnetron. Matt Blitz, Popular Mechanics, 2 Sep. 2021 Understandably curious just what the heck had happened, Spencer ran another test with the magnetron. Matt Blitz, Popular Mechanics, 2 Sep. 2021 According to Michalak, at the time Spencer was trying to improve the power level of the magnetron tubes to be used in radar sets. Matt Blitz, Popular Mechanics, 2 Sep. 2021 That power is transmitted through the magnetron at a high frequency, which then allows water, fats and sugars to absorb it and heat up. Chiara Vercellone, USA TODAY, 12 Nov. 2019 Before the Second World War, magnetron tubes were clunky and expensive to build, but the Allied Forces’ strategic reliance on radar required them by the thousands. Helen Rosner, The New Yorker, 3 Mar. 2021 From there, the magnetron converts electricity from your home into some pretty intense radio waves. Courtney Linder, Popular Mechanics, 6 Aug. 2020 The chip that drives the microwave blindly starts and stops the magnetron to heat expired Kung Pao chicken. Frank O’brien, Ars Technica, 30 Jan. 2020 See More Word History Etymology blend of magnet and -tron First Known Use 1921, in the meaning defined above Medical Definition magnetron noun mag·​ne·​tron ˈmag-nə-ˌträn  : a diode vacuum tube in which the flow of electrons is controlled by an externally applied magnetic field to generate power at microwave frequencies
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