YouTube Science! Part 9 - Jacob's Ladder!

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A Jacob's Ladder is probably the easiest, simplest high voltage display. It can also be extremely dangerous.
There is always at least one in any cinematic mad science lab. I have seen some sets with several! Typically, these are naked, with nothing to prevent the unwary from touching an electrode.
Nevertheless, it's a high impact build anyone can do. Acquiring the transformer is the hardest part.

Happy mad haunting!