Do supercunductors pull and attract magnets, or vice versa?

  • Thread starter Thread starter ForumFire
  • Start date Start date
  • Tags Tags
    Magnets Pull
ForumFire
Messages
16
Reaction score
0
I just needed to know for my work-in-progress hovershoes.
 
Physics news on Phys.org
Superconductors repel magnets. But forces always come in pairs, so it's not "or vice versa" - it's always and vice versa.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
View full post »

Thread 'Why measure the speed of light in one direction?'

It may be shown from the equations of electromagnetism, by James Clerk Maxwell in the 1860’s, that the speed of light in the vacuum of free space is related to electric permittivity (ϵ) and magnetic permeability (μ) by the equation: c=1/√( μ ϵ ) . This value is a constant for the vacuum of free space and is independent of the motion of the observer. It was this fact, in part, that led Albert Einstein to Special Relativity.
View full post »

Similar threads

Magnetism vs Altitude: Magnetic Pull & Gravity
Replies
3
Views
1K
B Calculating Force on an Iron Object with Magnetic Field
Replies
21
Views
4K
B Magnetic fields attracting two disc-shaped magnets
Replies
11
Views
2K
I Magnetism: Same Pole Repulsion & Heteropolar Attraction
Replies
32
Views
2K
Magnetic Attraction: Watching Magnets Move in Unison
Replies
24
Views
2K
Magnetism: Explaining the Attraction to a 7-Year-Old
Replies
2
Views
8K
I Why are Maxwell's equations and the Lorentz force "so different"?
Replies
9
Views
2K
I How Does a Magnetic Repulsion Machine Work?
Replies
5
Views
2K
Question about magnets and attraction
Replies
4
Views
2K
Finding Magnetic Moment from Pull Force
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top