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electron gun

noun

Definition of electron gun

: an electron-emitting cathode and its surrounding assembly (such as electromagnets in a cathode-ray tube) for directing, controlling, and focusing a beam of electrons

Examples of electron gun in a Sentence

Recent Examples on the Web

 The researchers expect that the whole kit, including the electron gun, can be encapsulated on a chip. — Chris Lee, Ars Technica, "Silicon LED created by buzzing surface with high-speed electrons," 22 July 2019 Varying the output of the electron gun, however, can create a lopsided force deliberately, permitting the craft to be steered. — The Economist, "Space travelA new way of propelling spacecraft may open up the asteroid belt," 21 Sep. 2017

First Known Use of electron gun

1924, in the meaning defined above

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