Discharge lamps are used throughout the world for lighting and advertising. Such a lamp consists of a
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Discharge lamps are used throughout the world for lighting and advertising. Such a lamp consists of a sealed tube with a metal electrode at each end, and contains a gas (e.g. He, Ar, Ne) or vapour (Na, Hg). The atoms are excited by an electrical discharge. Explain the origin of the pale yellow glow emitted by a helium discharge lamp.
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The pale yellow glow emitted by a helium discharge lamp is a result of the process of excitation and ...View the full answer
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