The cathode ray tube consists of the cathode, anode, electron gun, deflection plates, and a phosphor coated screen. It is a discharged tube that has a heating filament thatwhich heats up the cathode so it emits electrons, which they are attreactedattracted to the anode and it gains energy and speed. It then it passes through the anode in a straight line that is parallel to the axis of the tube. It then reaches a point where it gets to a screen that is coated with phosphorous. whenWhen the electron falls on the screen, it produces ana luminescence , and its color depends on itsthe material. The cathode ray tube is a device used in televisiontelevisions and computer monitors andas well as other useful devices that mademake our lifelives easier.