Placing a small magnetic needle near a bar magnet, it takes a determinate position.
To explain this, study Fig. 102, in which is a bar magnet (A).
The pole of the new induced magnet adjacent to the bar magnet is just opposite to the pole used.
There is still the same idea of turning the insect into a sort of bar magnet.
Fig. 28 shows some of the positions taken by a compass-needle when moved about on one side of a bar magnet.
A bar magnet is fixed upright with its north-seeking pole upward.
Will a bar magnet, used in Bell telephone, lose its power to such a degree as not to work?
The magnetic field surrounding a bar magnet is shown in Fig. 2.
A magnetic needle, the north pole n being attracted to the south pole of the bar magnet s, and repelled from the north end.
Would it reduce the strength of bar magnet to cut a thread on one end of it?