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How Does a Lumin/Plasma Disc Work?

  1. Oct 9, 2016 #1
    I am familiar with how a plasma globe works, and there are plenty of resources describing them, but I'm not 100% sure how a plasma disc works.
    If anyone knows, I'd love to have some insight on this subject.

  2. jcsd
  3. Oct 9, 2016 #2


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    Science Advisor

    I believe that they work on the same principle. One has a spherical envelope, the other is a flat walled disc.

    Since the envelope is filled at close to atmospheric pressure with a noble gas such as neon, there is no need for the spherical structure needed to enclose a vacuum. The manufacturing challenge with a disc comes when pumping out the air before replacing it with the noble gas.
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