What are the materials used in Neon sign tube lamps for different colors?

What are the materials used in Neon sign tube lamps for different colors?
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1 Answer

Answer :

Following are the materials used in neon sign tubes for different colors.
 For, Red – Neon gas.
 Reddish orange – Neon gas + Argon gas.
 Blue – Vapour of mercury.
 Golden – Neon gas + Helium gas.
 Green – mixture of Neon gas and mercury in yellow
glass tube.
By depositing fluorescent powder on the inner surface of the tube varying colors in intensity can be made.
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