COMPUTER SCIENCE AND ENGINEERING
COMPUTER GRAPHICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nitrogen
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Phosphorous
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Hydrogen
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Mixture of all three
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Detailed explanation-1: -On the inside the CRTs are coated with a phosphor layer that, when bombarded with electron beams, converts the kinetic energy of the electrons into light radiation. Different compositions of phosphor produce different colors. This is defined as the phosphor spectral characteristic.
Detailed explanation-2: -In a cathode ray tube, the cathode plate is coated with oxide of barium or strontium because. No worries! We’ve got your back.
Detailed explanation-3: -The screen is coated with fluorescent material called phosphor which emits light when bombarded by electrons. There are various phosphors available which differ in color, persistence and efficiency. One of the common phosphor is willemite, which is zinc, orthosilicate, ZnO+SiO2, with traces of manganese.
Detailed explanation-4: -A cathode-ray tube consists of one or more electron guns, possibly internal electrostatic deflection plates, and a phosphor target. CRT has three electron beams – one for each (Red, Green, and Blue) is clearly shown in the figure.