Hardened steel has a high degree of retentivity, while soft iron retains but little magnetism.
You can hammer it in the cold until it becomes as hard as soft iron.
Bruno hardly lifted his eyes from his chisel and soft iron hammer.
This is a magnet made of soft iron, so it will be readily demagnetized.
soft iron can be magnetized easily as you have just seen, but loses its magnetism in a short time.
In magnetism, a piece of soft iron used to connect the poles of a horseshoe magnet, for the purpose of preventing loss of power.
As in other moving-coil galvanometers, a soft iron cylinder within the form concentrates the field of the magnet.
A diaphragm of soft iron is shown at D, and E is the mouthpiece.
At the two stations the wire was wound round a magnet, that is to say, round a piece of soft iron surrounded with a wire.
We find that hardened iron and steel hold magnetism longer than soft iron, but all iron is magnetized somewhat at all times.