How/why does this happen/work?
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Electrons from plasma globes get pushed high enough in kinetic energy, that they displace other electrons out of the glass envelope. Any impressed voltage over about 3 volts, will ionize oxygen and nitrogen. Ozone can be formed from these ions, "people grease" or perfumes, and the visible light made in the globe.
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Ozone or triatomic oxygen is created by passing an electric current through ordinary diatomic oxygen.
a plasma globe works by having an electrical charge on a sphere.
a plasma globe works by having an electrical charge on a sphere.