Question: how does neon glow? :)
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Neon signs are made by putting some neon gas inside a glass tube, and passing an electric current through it. The electricity causes the electrons of the neon atoms to fly off, creating charged particles call ions. The ions the collide with the electrons to reform neon atoms, and this process creates light.
Not my area, but here is an article on how neon lights work: http://www.scientificamerican.com/article.cfm?id=how-do-neon-lights-work
🙂
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