Re: flipping of earth's poles

On Aug 26, 6:14 pm, herbertglaz...@xxxxxxxxx (G=EMC^2 Glazier) wrote:
Darwin  You post Earth's core produces a dynamo at its core to produce
electricity,but its physics is not the same as a man built dynamo.
Please explain the difference???
Most (not all) man made dynamo use a permanent magnet to provide
most of the magnetic field. A loop of wire is periodically moved next
to the permanent magnet, cutting the lines of force to generate
electric current in the loop of wire. These are the generators first
used by Faraday.
This generator uses a piece of metal made of a "hard"
ferromagnetic material that is magnetized. A "hard" ferromagnetic
material can remain magnetized without a macroscopic-current. The
ferromagnetic material has atomic sized electric currents, of course,
but not a "macroscopic-current." A macroscopic current can be measured
by a standard ammeter, the atomic sized currents can't be measured by
an ammeter. Coils are moved through the magnetic field of the
permanent magnet, creating an electromotive force in the wire. This
type of system is very efficient for turning mechanical power into
electric power. Which is why it is commonly used for generating
commercial electricity. However, it is not the only way to generate
power.
There are other ways to build a generator which aren't so
efficient. Some man-made generators don't need a permanent magnet.
Most of the mechanical power is turned into heat energy rather than
electric power. One doesn't want to use such generators because the
heat energy is useless. These generators are mostly built as research
tools, rather than as practical generators for producing electric
power. Scientists build these things to simulate processes that they
think are natural. However, these do generate electric current.
Other people have cited references to studies of "self-excited
generators." You have no problem understanding the typical high-
efficiency generators people use that were first invented by Faraday.
Start with such a generator in your mind. We will modify it.
In your mind, replace the permanent magnet by a coil of copper
wire with no ferromagnetic material inside. Pass part of the current
generated by the generator through this "nonmagnetic" coil of wire.
The coil of wire is connected in parallel to the wires that are
leading from the generator to the electric current. Use brushes or
something else to make sure the coil is always connected to the output
of the generator while the coil is spinning. Make sure there is no
ferromagnetic material in the wire. Now spin the loop of wire around
near the "nonmagnetic" coil of wire.
If there was no electric current, the copper coil wouldn't be
magnetic and there would be no electric current generated. However, if
there is a small electric current generated by any source at all it
gets amplified, taking mechanical power from the spinning. However,
this electric current is unstable. The electric current can suddenly
reverse itself in both copper coil and moving loop of wire. The
generator would still work. This is a "self-excited generator".
I know more about the other generator I have in mind. This is
the liquid sodium dynamo that I cited article about. The liquid sodium
is placed in a container, with a series of nonmagnetic pipes. It is
mixed by two turbines spinning in opposite directions. Because they
are spinning in opposite directions, the average flow of liquid is
zero. However, the system is very turbulence. Little eddies of liquid
material form in the fluid, moving in all directions. Some of the
eddies are helical, moving in the path that looks like a coil. Notice
the electrons in the liquid start moving with the liquid. There are
hundreds of little eddies in the liquid, dragging their electrons with
them in a coil-like motion.
An electric current is generated in the liquid sodium. This
electric current generates a magnetic field. This electric current is
just like that of the "self-excited dynamo" I described earlier. It is
unstable. It changes direction frequently. So the magnetic field
reverses frequently.
Note that this liquid sodium dynamo is very inefficient. Most of
the mechanical power generated by the two turbines is turned to heat
energy. Only a little bit of mechanical energy is turned to electric
power. However, the liquid sodium has a low conductivity. A low
voltage means a very high current. So the electric current generates a
magnetic field.
Sodium is not ferromagnetic. It can not be used to make a
permanent magnet, even in solid form. Since no liquid is
ferromagnetic, it would seem even less likely (if possible) that
liquid sodium is ferromagnetic. Yet, there it is. A magnetic field
from liquid sodium.
Maybe I can put it this way. The process going on in the liquid
sodium is a lot like what you call "static electricity." However, I
think you meant triboelectricity (i.e., electricity created by
friction). The process of forming eddies in the liquid is really a
form of friction. That is why most of the mechanical power is turned
to heat energy power. What is generating the electric power in the
liquid sodium dynamo, and in the self-excited dynamo, is really
friction.
You haven't studied friction in detail, so you don't really have
any idea what friction is. However, in fluids, the process of eddy
formation is considered friction. So the electric current generated in
the sodium dynamo, and in the earth, is a lot like triboelectricity. I
hesitate to make a one-to-one identification between friction and
these dynamo effects, since I may be leaving some detail out. I don't
know friction all that wee, although I have read something about it.
However, the generation of electricity in these systems are similar to
friction in some ways.
  I know static electricity creates a
magnetic field. Never thought differently.
Then what was the problem?
You know there is friction in the atmosphere. The warm ground
causes convection currents in the air. Most of the mechanical power in
the air is turned to heat power. However, some of the friction turns
the mechanical power into electric potential energy. The friction
generates electromotive force, that builds until the air ionizes, and
then air is conductive. and there is an electric current. Then there
is a magnetic field. Or maybe the friction is between water droplets
in the atmosphere. A big drop rubs a small drop, and there is
electromotive force.
In terms of generating electric power, this friction in the air is
very inefficient. Most mechanical energy is turned to heat. Only a
little gets turned to electric power. However, air usually isn't a
conductor. It turns to a conductor only briefly, during a lightening
flash. Boom!
Well, liquid iron is a lot more viscous than air. The hot center
of the earth creates convection currents in the liquid iron. The
liquid iron in some eddies rubs with the liquid iron in other eddies,
creating friction. Or something very much like friction. Most of the
energy from friction is turned to heat energy. However, some is turned
into electric power.
In terms of creating electric power, this is a very inefficient
process. Most of the mechanical energy in the earths core is changed
right back to heat energy.Only a small amount is turned to electric
power. However, liquid iron doesn't have to ionize. Liquid iron is
ALWAYS a conductor. So the electric current is generated continuously.
That's where the continuous magnetic dipole comes from.
 Lightning I posted creates
lots of irons and free electrons,and that makes the air very conductive.
Freudian slip. You meant "lots of ions".
There are lots of ions and free electrons in liquid iron. ALL
the time. Liquid iron is always a conductor. Always. With or without
carbon. And if there was uranium dissolved in the iron, guess what?
The alloy would STILL be an electrical conductor. And if there was
carbon dissolved in the iron? The iron would STILL be an electrical
conductor.
Think of what the situation in the atmosphere would be if air
was ALWAYS a conductor. There would be no lightning flashes. A small
current would flow ALL the time.
Yes iron heated to 5700F will not have any magnetic properties.
Sodium NEVER has magnetic properties. Never, never. Liquids of
any type NEVER have magnetic properties. Yet there you have it. A
magnetic field coming out of liquid sodium. How do you explain it?
The garbage you mixed together wasn't completely liquid, it was
a suspension. The particles in the liquid were solid. You could have
seen those solid particles under a microscope if you bothered to
look.
I believe Earth's magnetic field does originate at its core,but needs
much more research on. Needs a theory that can answer more questions .
After all the core is only 4,000 miles away.   Bert
How come the magnetic field is pointed out of the earth near
the poles? The declination of the magntic field is measurable. The
magnetic field near the magnetic poles is almost orthogonal to the
surface.
And yes, the earth's magnetic field needs more research. That is
why scientists are building more self-excited generators, more liquid
sodium dynamos, and other devices that "can't" exist. This research is
expensive. Write to Obama.
.

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