electron gun


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

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'electron gun.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of electron gun

1924, in the meaning defined above

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Time Traveler for electron gun

Time Traveler

The first known use of electron gun was in 1924

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Cite this Entry

“Electron gun.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron%20gun. Accessed 26 May. 2020.

More from Merriam-Webster on electron gun

Britannica.com: Encyclopedia article about electron gun

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