A Jacob’s Ladder with water electrodes is formed between two streams of salty water and gives a bright orange colour.
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Above: A one sided ladder using water from our salt water pool. Simple gravity feed siphoning from a plastic tube into a metal nozzle with 6 kV NST.
The Jacob’s ladder with water electrodes using seawater powered by a 12 kV NST . Exposure is 1/8 second. See how the sparks are orange with the salt on alternate half cycles. It is only one electrode polarity that gives the colour.
The Jacob’s ladder with dual water streams using seawater. Sometimes if the spark lingers on a pool of salty water it colours the flame much more strongly with the intense colour of the sodium in the ladder .
On the other hand a copper sulphate solution in the right has very little sodium. I might have used rectified DC for this as the sodium colour is only on one side.
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Photo Date: Sept 11, 2005