Re: Bruce's TPU Theory and Experiments - understanding field lines

[MileHigh]

Final comments.  Some people may be wondering at how the fancy and somewhat complex field lines are formed for both the magnetic lines of force and the electric lines of force.

In actuality the process is very simple.  It just a "blind and dumb" addition of the field vectors from each source at every point in 3D space that's taking place, giving you the resultant pattern.  Take the example of two positive charges that are spheres.  Both will emit straight lines of electric force that extend out to infinity.   So when you put two positively charged spheres next to each other "nothing happens."  It's like each positively charged sphere is still emitting exactly the same electric field lines.  At every point in 3D space you have a vector addition taking place, one vector from one sphere added to the second vector from the second sphere.

That's why a "Rodin coil" is a meaningless futile exercise.   Every loop in the Rodin coil generates a magnetic field that blindly adds to the magnetic field generated by every other loop in the Rodin coil.  Instead of in a regular coil where you have a nice orderly addition of all of the magnetic field vectors contributed by each loop, for a Rodin coil you have a mish-mash were every loop is a different shape and a different orientation.  You still have the same dumb blind addition of magnetic field vectors taking place but since they are not lined up like in a regular coil, you have partial additions and partial subtractions taking place.  After all that trouble winding the Rodin coil you still end up with a bloody coil that has no special properties above and beyond a regular coil.  A Rodin coil is just an inefficient use of wire to make an inductor and no more than that.

MileHigh

[Magregus]

Those field lines from the magnetic diagrams are completely wrong.

[TinselKoala]

Magnetic field lines emanate from electron orbitals, ie charge in motion, and are loops through those orbitals. Where and at what angle they exit the _surface_ of a bulk magnet is really immaterial. No pun intended! There are no real "lines" and there aren't even real "poles", just polarities. They are at right angles to the generating motion of charge, as always.
If you draw a single bar magnet and make it transparent, you will see that the lines do just the same thing as the electric field lines between two opposite charges. True, all the lines exiting the bulk magnet will loop around and close, and electric field lines _from a single charge_ extend to infinity... but that isn't what is shown in the diagrams. There are two charges! Not all the EF lines will extend to infinity, many or most will terminate on the charged electrodes, and the bulk diagram in the near field will look very much like the magnetic field lines within and around the bar magnet.
When you introduce a second bar magnet with its two "polarities", but compare to the field from only two electric charges as before... you no longer are making a valid comparison, imo.

[forest]

Magnetic field lines emanate from electron orbitals, ie charge in motion, and are loops through those orbitals. Where and at what angle they exit the _surface_ of a bulk magnet is really immaterial. No pun intended! There are no real "lines" and there aren't even real "poles", just polarities. They are at right angles to the generating motion of charge, as always.
If you draw a single bar magnet and make it transparent, you will see that the lines do just the same thing as the electric field lines between two opposite charges. True, all the lines exiting the bulk magnet will loop around and close, and electric field lines _from a single charge_ extend to infinity... but that isn't what is shown in the diagrams. There are two charges! Not all the EF lines will extend to infinity, many or most will terminate on the charged electrodes, and the bulk diagram in the near field will look very much like the magnetic field lines within and around the bar magnet.
When you introduce a second bar magnet with its two "polarities", but compare to the field from only two electric charges as before... you no longer are making a valid comparison, imo.

My friend , you are one step from ou 

[MasterPlaster]

One thing that always bothers me about any graphical representation of magnetic fields is that they are shown as a two dimensional effect.

MAGNETIC FIELDS ARE 3 DIMENSIONAL.

Also there is no such thing as lines of magnetic force and even if there were, they do not follow a straight line.

Once every one clears their mind of garbage then new thinking can begin.