He has played with a horseshoe magnet, and has found the north by means of a compass.
In magnetism, a piece of soft iron used to connect the poles of a horseshoe magnet, for the purpose of preventing loss of power.
It was as flat and cleancut as the inside surface of a horseshoe magnet.
If the ordinary bar or horseshoe magnet be carefully examined, one end will be found to be marked N.
In this simple machine the lines of force exist between the poles of a horseshoe magnet.
In Fig.4 M is a magnet bent into the form of a U, commonly called a horseshoe magnet.
Fig. 31 shows the magnetic figure of a horseshoe magnet with round poles, the poles being uppermost.
Any number of little magnets may be made from a horseshoe magnet without injuring it.
Fig. 138 shows how a current can be generated by a horseshoe magnet and a coil of wire having an iron core.
The north pole of one of these magnets is clamped to the south pole of the other, so that in reality a horseshoe magnet is formed.
