It’s pretty common stuff, seen commercially in everything from mercury vapor lamps ... flame that’s barely above room temperature but still has all the reactive properties of a plasma.

Get ready for the world’s first 4000° plasma lightsaber with a retractable blade. Watch as I demonstrate the technology ...

It took a lot of tweaking — and a lot of MOSFETs — to get the candle to produce a stable flame. But once it did, the results were striking. The plasma coming off the breakout point on the ...