a cathode ray tube consists of two
Hii,
A cathode ray tube consists of five major parts: an envelope or container, an electron gun, a focusing system, a deflection system, and a display screen.
The cathode , or electron emitter, is made from a cesium alloy.
Cesium is used as a cathode in many electronic vacuum tube devices because it readily gives off electrons when heated or struck by light.
In a CRT , the cathode is heated with a high resistance electrical wire.
Or you can define it as
The cathode - ray tube ( CRT ) is a vacuum tube that mainly contains one or more electron guns and a phosphorescent screen, and is used to display images.
It modulates, accelerates, and deflects electron beam(s) onto the screen to create the images.
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