From the Thirties via the Seventies, Aerolux Delicate Firm produced these fantastic novelty mild bulbs that contained sculptural filaments inside the type of flowers, birds, and myriad totally different designs which will illuminate in a number of colors. The bulbs contained a mixture of neon or argon (or every) and among the many parts have been coated with phosphors to comprehend utterly totally different coloration outcomes. By means of Wikipedia:
Aerolux gasoline discharge mild bulbs contained low pressure gasoline, each neon or argon, or a mixture of the two. Moreover contained in the bulb have been metal sculptures coated with phosphors. These phosphors fluoresced when excited by glow discharge. Because of glow discharge occurs readily at 100 ten-100 twenty volts AC, one may use these bulbs in regular household lamps within the USA.
The phosphors used inside the bulbs have been significantly brittle, necessitating care in coping with. Shaking or jarring the bulbs would set off flaking and migration of the phosphors to totally different parts of the metallic sculpture. Such coping with would go away non-fluorescing elements of the sculpture and/or migration of phosphors to totally different surfaces all through the bulb.
On the height of producing quite a few the bulbs provided for a mere .20 cents, nevertheless can now fetch an entire bunch of dollars on Ebay or Etsy. Do you have to happen to be in New York you probably can see a bonafide Aerolux bulb that’s on eternal present at MoMA as part of an artwork work by artist Dan Flavin. (by means of Neatorama, Geyser of Superior, Oddity Central)