CHAPTER III. =Induced Magnetism= 20
Exp. 24, To find whether we can magnetize a piece of iron without touching it with a magnet.--Temporary Magnetism; Induced Magnetism.--Exp. 25, To find whether a piece of steel can be permanently magnetized by induction.--Exp. 26, To study the inductive action of a magnet upon a piece of soft iron.--Polarization; Pole Pieces.--Exps. 27-30, To study pole pieces.