I’d say ‘don’t try this at home’ but that never stopped anyone – Giles Read from first acquiring a high voltage generator, then hooking it up to photograph this spark (with accompanying cracking air) between two thumb tacks. You can read more about the process in the description on Flickr.
I saw a little high voltage generator on eBay that promised a one megavolt output from a single Li-Ion cell – and cost about the same as a McBurger.
I had to have one!
It arrived this morning and its output wires were swiftly soldered to a pair of drawing pins (ideal in this application because they’re effectively a nice pointy end backed by a large heatsink).
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