Or I hate to mention LED's LOL Ira.
On 1/10/2014 5:14 PM, NeonJohn wrote:
On 01/10/2014 08:01 PM, John Smith wrote:This is getting interesting...never have seen a pure green ionized gas. There is a possibility it may have been a hybrid gas mixture. Since Helium produces a pale yellow and mercury will produce a blue color...possibly it was a mixture of a few types of gases. Also some ionized gas will produce different colors at different energy (voltage ) levels. Pressure also enters the equation. As far as any commercial vacuum tube regulators I have yet to see a pure green color.What we neonists would give for a pure green gas! Unfortunately there isn't one. Krypton does a rather boring greenish tinged dull white. Neon has an excitation state that decays with a green photon but it's very hard to get it that excited without laser light. Copper ion lasers do a beautiful green plasma but that's not something that could be used for display purposes. Unfortunately for the color green, it's either colored glass or phosphor. John
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