What’s in a flame?
The chemistry and physics of fire are surprisingly complicated for something so ubiquitous, but there’s a pretty easy answer for “what’s in a flame?”
When a candle flame is placed between two contacts holding a about ten thousand volts, the flame is pulled to the positive and negative side like a flickering butterfly. The air, usually a good insulator, allows the ions within the flame to jump to either side, allowing an arc to form.
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