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This year we added helium gas to our Violetwanda Presents line of glass electrodes. This gives us 5 noble gas colors that we offer in our electrodes: Argon (violet), Xenon (blue-violet), Helium (blue), mix Argon+Neon (pink), and Neon (orange-red).

Noble gases have their own color when electrically excited in a discharge tube.  The noble gases are helium, neon, argon, krypton, xenon, and radon. Radon is a radioactive gas so we don’t plan to work with that.  Mercury vapor makes a bright blue, but no..we do not plan on ever working with mercury either.

The noble gases (as I’ve written about elsewhere on these pages) don’t react with other elements so they are very stable and ‘inert’.  And when excited by electricity they ionize (turn into plasma) and glow different colors.  To get other colors in neon signs such as greens, yellows, or brighter reds, requires phosphor coatings on the inside of the glass, making the glass appear opaque.  I don’t know if we’ll ever use any phosphor coatings, as I’ve always preferred things in their purest form. But I never say ‘never’.  But  for now, these 5 gases in these 5 colors.

 

 

 

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