Lenard ray

noun

One of the rays that emanate from the outer surface of a plate composed of any material permeable by cathode rays, such as aluminium, which forms a portion of a wall of a vacuum tube, or which is mounted within the tube and exposed to radiation from the cathode.

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Meanings

nounLenard ray (plural Lenard rays)

plural Lenard rays

  1. datedOne of the rays that emanate from the outer surface of a plate composed of any material permeable by cathode rays, such as aluminium, which forms a portion of a wall of a vacuum tube, or which is mounted within the tube and exposed to radiation from the cathode.

Origin

Named after the German physicist Philipp Lenard, who first described them.

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Cite this entry
APA

Lenard ray. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Lenard%20ray

MLA

“Lenard ray.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Lenard%20ray. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Lenard ray,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Lenard%20ray.

Source: Lenard ray on Wiktionary, CC BY-SA 4.0.