Definition of CRT

CRT (Cathode Ray Tube): CRTs are the glass vacuum picture tubes inside televisions and computer monitors. They are based on the emission of a magnetically targeted stream of electrons from the back of the picture tube on to phosphors located on at the front. The electron hittings the phosphors causes the emission of light with a vibrancy still unrivalled by competing technologies, such as gas plasma displays and liquid crystal displays.

The big draw-back of CRTs is their large depth of the glass picture tube required for the projection of the stream of electrons. The big advantage of CRTs is price. TVs are less expensive than the competition.

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