In article , Ned Simmons
says...


Yup. As I said in my first post in this thread, "any
analogy between electricity and a compressible gas is
doomed."

And yet you see them, ALL the time. I think this
is because electricity used to be taught that way,
with the pipes/valves/tanks/pumps. Some folks
simply cannot wrap their minds around electricity
so the plumbing analogies show up in the older texbooks.

My dad a case in point. He understands how electricity
flows. But he never did grasp alternating current.
How can it do any work if it's only going back and
forth?

Jim

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