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If you've never seen neon up close, plasma is such an incredible light source. It's like the light is just floating being emitted from empty space. I took a neon workshop a few years ago, and it became clear why people are still willing to painstakingly make these signs - there is really nothing comparable to them, they're like magic

For those who want to read the wiki article:

https://en.wikipedia.org/wiki/Barometric_light

I wish these could be made with something non toxic. Having one on my desk to shake would be a great fidget spinner.