Natural magnets Magnetic iron ore is quite common in many parts of the world. If it cannot be obtained locally, find a supply house that will provide it for a small cost. A piece of such iron ore is a natural magnet. Sprinkle some iron filings or finely cut pieces of steel wool on a sheet of white paper and observe how the ore attracts them. Try picking up heavier things made of iron, such as paper clips or carpet tacks. Bring the lump of ore near a compass and observe. Do all parts of the lump affect the compass in the same way? Where to find artificial magnets Strong and useful artificial magnets for the study of magnetism can be obtained from old radio loudspeakers, from old telephone receivers and from old automobile speedometers. Magnets can frequently be purchased in the market and may always be obtained from scientific supply houses. Artificial magnets are made in many shapes such as horseshoe, U-shaped and straight or bar magnets.