Each time you see a "focus" generally elongated tubular shape what we call " neon tubes" which is incorrect , the fact is that, strictly only the tubes are red and orange colored compounds by gas neon (Ne).
Other colors are emitted by other gases, the helium causes a violet hue and krypton , a pale lilac.
knew?
Other colors are emitted by other gases, the helium causes a violet hue and krypton , a pale lilac.
knew?
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