A Jacob’s ladder is a physics device for producing high-voltage traveling arcs. You can always build your own or buy it in all sizes. Phantom Dynamics’ Jacob’s Ladder looks pretty amazing. It stands 16″ tall and is powered by 110 volts. It has an adjustable knobs to control the arc.
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Science First Jacob's Ladder with Climbing Arcs ⚡ Gadgetify
Phantom Dynamics Jacobs Ladder
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