Read this:
http://www.school-for-champions.com/science/magnetism_lorentz.htm
"Cause of Lorentz Force
A magnetic field is created by the motion of an electrically charged particle—such as a proton or electron. If that electrical charge is moving through an external magnetic field, there will be...
B field can interact only with B field. Where is the B field of those "moving" electrons? The spin magnetic moment interact here? (Because at the Lorentz force two B field interact each other.)
Yes, transformer. What cause the EMF in the secondary coil? The changing magnetic field just allign...
I read many different explanation but none of them is satisfying.
There is two cases:
1. I move an iron rod in a magnetic field, between two bar magnet for example.
To this case I read that when I move the rod the electrons on it also move and moving charges produce magnetic field which...
1. No, of course not. QFT is a big monster! :nb)
2. Thanks, I like hyperphysics! I used to read this site frequently a couple of years ago.
I already found the answer by Google on this site with useful links in someone's answer...
What cause the refraction of light? I read somewhere the change of speed but the angle is also important. But why the light refract to the thicker part of an optical lens?
I found the answer for my own question!
http://www.school-for-champions.com/science/magnetism_lorentz.htm
"A magnetic field is created by the motion of an electrically charged particle—such as a proton or electron. If that electrical charge is moving through an external magnetic field, there...
You are right! I forgot the coating!
But where is the Lorentz force in this demo? The electron flow in the same direction with the flux of those magnets. These has to be perpendicular to each others.
I read the resistance of a magnet is very high. I was thinking... this resistance is up to the direction of the current flow. Those electrons in a magnet stick on their position much more than on a non-magnetized metal. They have to change their spin against the other electrons and full domains...
Electrons don't have to change their spin because of a little thermal motion. Big is demagnetize the metal of course. Current flow force spin to allign but electrons are already alligned to an other direction and will resist. The degree of R is up to the direction of the current flow.
But electrons are flowing through the magnets. Is it demagnetize them? I mean e- particles change, one leave and one arrive which has to allign to the right direction to keep up the magnetic field.
Most turns in the tunnel (on the second demo) are short circuited because contact each others...
How these are working:
Is current flowing? In the first case I don't think so. In the other... the wire is insulated like in a coil I think and then no current also. But why need the battery and why the battery is discharging?
Can current flow through a magnet without demagnetize it? What...
If we have a piece of metal, there is delocalized electrons on its surface. These electrons are moving or not? If moving then radiating EM energy and loose kinetic energy, finally stop moving. This would stop them.
But if not move how can the changing magnetic field accelerate them? So called...
What keep electrons move? I read somewhere that in q physics the kinetic energy of an electron mean how much the wave cloud is compressed. If the electron is part of an atom its wave is wide a smeared but if delocalized then its wave is small and its position much more exact.
But the electron...
You mean the "spin" get "faster" due to the magnetic force? Or the energy of the magnetic force used up when electrons allign to it? By the way: the magnetic field get weaker while do work on those electrons?