Why do bulbs and tube lights have a glass covering
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It increases bulb life by preventing the tungsten filaments from deteriorating too quickly. Other gases such as helium, neon, nitrogen and krypton are also used in lighting. so to store this gases in bulb a glass coatings are used. Also the glass is non reactive with glasses,hence the glass are used to electric bulb.
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Ans- The glass covering the bulbs and tube lights because Safe.
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