cathode spot

noun

Definition of cathode spot

1 : a small area of the anticathode of an X-ray tube upon which the cathode rays are focused and from which proceed the X rays
2 : a small area on the mercury cathode of a mercury-arc rectifier where the arc strikes it and liberates electrons

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Cite this Entry

“Cathode spot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cathode%20spot. Accessed 13 Aug. 2022.

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