Take a large number of small magnets, all pointing in the same direction, and glue them together. You get something like: This is a pretty good model for a typical bar magnet. The individual small magnets are individual atoms. Now place your hypothetical north pole inside this larger magnet, a...

The following text is from Concepts of Physics by Dr. H.C.Verma, from the chapter "Magnetic Properties of Matter", page 281, topic "Magnetic Intensity $H$": Whenever the end effects of a magnetized material can be neglected, the magnetic intensity due to magnetization is zero. This may be the...

I moved my spectacles of farsightedness away from an object and tried to look at the image formed. It was erect. I moved even more far but still it was erect. How is this possible? I hope my question is clear.

It is said that, due to end effects, the assumed poles of a bar magnet are slightly inside the ends of the magnet. The distance between the locations of the assumed poles is called the magnetic length of the magnet. The distance between the ends is called the geometrical length. The magnetic l...

It is said that, due to end effects, the assumed poles of a bar magnet are slightly inside the ends of the magnet. The distance between the locations of the assumed poles is called the magnetic length of the magnet. The distance between the ends is called the geometrical length. The magnetic l...