Question about ordinary magnets. (Not homework)

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Magnets do not have a physical line that divides them into north and south poles; instead, the magnetic field is continuous. This division is conceptual, as the poles are not equal in strength or size. The field lines extend from the north pole to the south pole, creating a magnetic field that interacts with other magnetic fields. For a deeper understanding of magnetism and how magnets react to each other, several educational websites and resources are recommended. Exploring these resources can provide clearer insights into magnetic interactions and field dynamics.
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Is there a line splitting a magnet into north and south? What is this line called? Also does the line divide the magnet equally?
 
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No, and no.
 
Do you know any websites which would explain better about how a magnet reacts to other magnetic fields between its two poles? or something like that?
 
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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