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Cathode ray tube of TV:-- in tv cathode ray tube (CRT) is a vacuum tube and a fluorescent screen used to view images. crt emmits the little X-ray which effect eye to avoid this lade glass is coverd vacuum tube. 
 X-Ray Protective Glass
as radiation shielding of gamma rays, lade glass absorb gama rays.
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write it in detail please!!!!
may it's help u..
it helped

glass solders, cathode ray tube of TV, gamma rays, house hold crystal leaded glass, X ray.
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pls in detail!!!!
and it is in the field of optics
ya I know
thn write
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