cathode rays


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to cathode rays: Anode rays

cath·ode rays

a stream of electrons emitted from the negative electrode (cathode) in a Crookes tube; their bombardment of the anode or the glass wall of the tube gives rise to x-rays.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Today, most monitors are cathode ray tube (CRT) devices that employ the same technology as your television.
In 1880, using his own Crookes tube, he showed that cathode rays traveled in straight lines and cast sharp shadows.
Radiation was clearly emerging from the tube when the cathode rays were streaming, and was penetrating matter to some extent.
There were still some who thought that cathode rays were a wave form and doubted Crooke's observation that they carried electric charges.
By now Perrin's work had convinced everyone that cathode rays consisted of negatively charged particles (see 1895).