Uses of Neon
Neon is used in discharge tubes and fluorescent bulbs for advertisement display purposes.
Glow of different colours 'neon signs' can be produced by mixing neon with other gases.
Neon bulbs and used in botanical gardens and in green houses.
Uses of Argon
Argon is used mainly to provide an inert atmosphere in high temperature metallurgical processes such as arc welding of metals and alloys. In the laboratory, it is used for handling substance which are air sensitive.
It is used in filling incandescent and fluorescent lamps where its presence retards the sublimation of the filament and thus increases the life of the lamp.
It is also used in "neon signs" for obtaining lights of different colours.