Lenard ray

English

Etymology

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

Noun

Lenard ray (plural Lenard rays)

1. (dated) 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.

Related terms

• Lenard tube