What exactly is a magnetic field?

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A magnetic field is generated when a charged body is in motion, influencing the surrounding space by creating a magnetic force. This motion of charged particles leads to the alignment of magnetic field lines, which can affect other charged bodies in the vicinity. The interaction between moving charges and magnetic fields is fundamental to electromagnetism, impacting various physical phenomena. Understanding these principles is essential for applications in technology and physics. The discussion highlights the importance of exploring the relationship between charge motion and magnetic field generation.
Sharon25
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What exactly happens when a charged body is in motion.What change does it bring about in the space surrounding it.
 
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Sharon25 said:
What exactly happens when a charged body is in motion.What change does it bring about in the space surrounding it.

There have been a number of recent threads on this topic: Here's one post that will point towards one generally accepted answer: https://www.physicsforums.com/showpost.php?p=4475921&postcount=6
 
Thanks for the link. It was very useful
 
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...
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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.
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