Cathode Ray Tube
An evacuated tube containing an anode and a cathode that generates cathode rays (electrons) when operated at a high voltage. The cathode rays produce an image on a screen when they strike phosphors on the screen, causing them to glow.
Schematic of a cathode ray tube
The colloidal graphite coating in cathode-ray or television tubes.
See also: Aquadag, Cathode Ray, Crookes, William, Deflection Coils, Deflection Plates, Electron, Electron Gun, Electrostatic Deflection, Focusing Anode, Horizontal Deflection Plates, Persistence, Vacuum Tube, Vertical Deflection Plates, Vidicon.