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.

From The New Yorker

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

From Forbes

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.

From Scientific American

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

From Scientific American

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.”

From New York Times

Related Words

• radioactivity
• Roentgen rays
• Röntgen rays