cathode rays

plural noun

1. a stream of electrons emitted from the surface of a cathode in a valve

Example Sentences

When the electrode was heated, it would shoot cathode rays across the chamber toward the sphere.

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The “cathode rays” in a CRT monitor are just electrons accelerated through a gap between plates with a couple thousand volts between them.

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Directed on to the glass walls of the tube – or as researchers discovered, on to sheets of particular minerals – the cathode rays stimulated bright fluorescence.

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Lenard, through experimenting with cathode rays,  discovered that the energy of the electron depends on the wavelength of light.

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Philipp Lenard, who won a Nobel Prize for his work on cathode rays, wrote a four-­volume treatise on the one true science and called it “German Physics.”

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Related Words

• Roentgen rays www.thesaurus.com
• Röntgen rays www.thesaurus.com
• radioactivity