How about when a CRT fires electrons through a vacuum and onto phosphorus
coated screen, would you consider that to be current flowing without a
conductor?
Scout
"Capt. NealŪ" wrote in message
...
Negative! There is no current unless there is a conductor.
A conductor allows low-energy electrons to jump from atom
to atom.
CN
"Scout" wrote in message
...
but isn't Bob's point that the electron is moving, and in doing so must
have
a path, and hence, by definition, is electrical current?
Scout
"Capt. NealŪ" wrote in message
...
What a behind-the-times bunch of Putzes!
It has been proven electrons don't have an orbit. According to
quantum mechanics, electrons only have probability of filling those
areas around the core of an atom where the wave component of
the electron can exist without canceling itself out.
I hope this helps.
CN
"Scout" wrote in message
...
I see what you mean. Each electron orbit is a closed circuit.
Does emf play some role in propelling an electron through its orbit?
Scout
"Bob Crantz" wrote
The flux must cross a closed conductor (loop) for current to flow.
But
that
is pertinent to a permanent magnet.
Atoms have magnetic fields from the electron orbits. The electron is
in
motion around the nucleus in a closed path. The electron, through
its
motion, is a current and generates a magnetic field. If enough atoms
are
in
correct alignemnt you have a net magnetic field.
"Scout" wrote in message
...
I thought the flux had to cross a conductor for current to flow.
"Bob Crantz" wrote in message
link.net...
A permanent magnet does have current flow.
"Scout" wrote in message
...
"JG" wrote in message
...
I believe the Swedes did a study that showed there were know
ill
effects
on
people, but I would pass on it if it were overhead. I believe
their
study
was directly overhead. 200 feet probably wouldn't be an issue.
More
investigation is, of course, warranted.
Makes one wonder about the magic magnetic bracelets and bands
people
wear
for pain management. Why would magnetic flux be a miracle cure
when
produced
by a permanent magnet but not when produced by current flow?
Scout
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