Todays GlassFact: Alkali-barium Silicate Glass: Without this type - TopicsExpress

Todays GlassFact: Alkali-barium Silicate Glass: Without this type of glass, watching TV would be very dangerous. A television produces X-rays that must be absorbed, otherwise they could cause health problems. The X-rays are absorbed by glass with minimum amounts of heavy oxides (lead, barium or strontium). Lead glass is commonly used for the funnel and neck of the TV tube, while glass containing barium is used for the screen.

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