The bearing motor

[Jimboot]

And the novice here was wondering what you brainiacs were on.

[tinman]

Just make a diagram of the homopolar motor and work it out for yourself like I tried a few postings ago for the bearing motor.  Before you tackle the bearing motor you want to be able to explain the homopolar motor and you may as well throw in explaining the aquarium vortex and bubbles business if you want.

All of the basic concepts have already been stated in the past week, so there is no point in repeating them.  It just a question of applying the concepts to the homopolar motor setup.

OK,so now all you have to do MH is explain as to how the bearing motor will spin in either direction,where as the homopolar motors direction of spin is determond by the direction of current flow,or the orientation of the magnetic fields.

I have looked at many diagrams as to how the homopolar motor is suppose to work,and it still dose not answer the question as to how the uniform stationary magnetic field around the wire creates a unidirectional force against the uniform magnetic field around the magnet. I see lots of pretty arrows around the wire and the PM,and all explanations say that the field around the wire pushes against the field lines of the PM-->the PM has no field line's,it is a uniform field. Mag's experiment also shows that something is being missed here.

I dont think anyone has actually stood back and had a good look at the homopolar motor,they just except what some one else has told them.

Now,below is a pic showing the fields and force direction of the homopolar motor.
So,we have an even uniform field around the magnet(there are no field lines),and we have a uniform field around the current carrying wire. We also see an arrow showing a force direction.
So please explain to me how this force is not uniform around the wire-->why is this force in only one direction when the two fields are uniform. Why dose the arrow showing force not point backwards-why dose it point forward?. This is like sticking your finger through the side of a bucket of water,and saying there is more pressure on one side of your finger than there is on the other.

[ekimtoor1]

Could this be related?

http://revolution-green.com/magnetic-fields-create-fluid-flows-particle-suspensions/

[allcanadian]

@Bill

Oh...Duh!  I read about the sphere within the sphere but it looked like he was
so careful in placing it on the stand like it was in hover position.  I just
looked again and...who the heck would pay 140 bucks for that?

OK, now I feel stupid.

Welcome to the human race and I catch myself all the time making assumptions concerning things I think I see that just ain't true. I like that globe because it is unintuitive and is a good example of how our mind is constantly playing tricks on us. I mean when I first saw the globe rotating on the stand in the video I fell for it hook, line and sinker and even after I knew exactly how it worked I still found it mesmerizing because the illusion is flawless.
I think the homopolar motor and the ball bearing motor are similar in nature because we know it must be very easy to understand fundamentally however our mind will not allow us to accept it for what it is due to our perspective. Our mind starts creating unworkable solutions then tries to justify them not unlike believing a globe can magically hover and rotate on a plexiglass stand which we know cannot work but there it is working. As I said I like these kinds of illusions because it gives us some valuable insight into how we perceive things and how easy it is to make false assumptions.
AC

[allcanadian]

@Tinman

Now,below is a pic showing the fields and force direction of the homopolar
motor.
So,we have an even uniform field around the magnet(there are no field
lines),and we have a uniform field around the current carrying wire. We also see
an arrow showing a force direction.
So please explain to me how this force is
not uniform around the wire-->why is this force in only one direction when
the two fields are uniform. Why dose the arrow showing force not point
backwards-why dose it point forward?. This is like sticking your finger through
the side of a bucket of water,and saying there is more pressure on one side of
your finger than there is on the other.

Below is a similar picture describing the direction of force found in every DC motor and as you can see only the layout has changed. The homoplar motor is a simple DC motor however our mind cannot put it into the proper perspective because we cannot connect the dots as easily as in the picture below.

AC