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Chuck Britton wrote:
Chemists do a demo with a glass rod hooked up to 120 VAC.
When the rod is heated to a dull glow with a torch, enough
current flows to maintain the joule heating of the rod.
Like any piece of good information this begs for questions.
The first one has to do with a desire to reproduce the
experiment.
Perhaps the "glass" chemists use is not
pure. But how can it be; they are in the best position to
know.
Ludwik Kowalski