[Magnetism TQ99 - part for kids]

agnets are mysterious objects. They have an invisible force, by which they can attract or repel other objects.
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agnets are being used by people in many devices e.g: hairdryers, telephones, vacuum cleaners, electric mowers, cassette recorders and LP's. Computers use magnets to save information. Huge magnets are used to separate waste. The earth itself is a huge magnet too. Now people use electromagnets in a train. This is a train without wheels. It rides without touching the rails. In the train and in the rails are magnets that repel each other. The train hovers by the magnetic power and is moved forward by it too.

compass helps you to find the north. The north pole (which points to the north) always should be red. How you can make a compass yourself is explained by "experiment 3."

id you know...

The colors of the north- and south pole are made by the magnetism of the earth.

Some academic people think, homing-pigeons find their way home
by the magnetic field of the earth.

Magnets are made by pouring molten steal in jigs and after that cooling it down
in a strong magnetic field. After cooling down and harding the steal is magnetic.

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hen you don't have a magnet, you can ask your cycle shop to give you an old dynamo. Remove the cover and be careful with the magnet, which looks like the picture on the right. With the magnet you can do many funny things, e.g. experiments. A magnet don't seems to attract or repel many things, only objects which contain iron or steal. Just try it. Magnets work under and above water.

=)>

EXPERIMENT 1: With a magnet, a paperclip, a piece of tape and a ware you can make a kite of ironwire. Attach one end of the wire to the underside of the paperclip and the other end with the tape to a table. Lift up the paperclip with the magnet. You can hold the magnet in a way that there is some space between the magnet and the paperclip, or hold a piece of paper between the magnet and the paperclip, without letting the paperclip fall.
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EXPERIMENT 2: Around a magnet is a invisible magnetic field. Inside this field works the magnet. You can find out what this field is like, by taking a plastic plate or so and sprinkle filings on it. Hold a magnet in one way under it (best is a iron magnet) and tick the plate carefully. The filings will form a line patron on the plate. How closer the lines, how stronger the magnetic field is.
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EXPERIMENT 3: You can make a compass yourself, by rubbing 20 times with the south pole of a magnet in the length over the eye of a needle. Fasten a long small thread to the middle of a needle and the needle will point to the north.
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EXPERIMENT 4: With balls out of a ball-bearing you can do an experiment too. Hang the balls one by one on the magnet. The magnetic field of the magnet penetrates each ball and makes that ball magnetic. If you have done experiment 1, you know that the magnetic field continually becomes weaker if you go further of the magnet. Through that is it that only a few balls can hang on the magnet. You can try to take the uppermost ball and the magnet and move up the magnet slowly. After a while some balls will fall, because the magnetic field is too weak there to attract the balls.
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	EXPERIMENT 1: With a magnet, a paperclip, a piece of tape and a ware you can make a kite of ironwire. Attach one end of the wire to the underside of the paperclip and the other end with the tape to a table. Lift up the paperclip with the magnet. You can hold the magnet in a way that there is some space between the magnet and the paperclip, or hold a piece of paper between the magnet and the paperclip, without letting the paperclip fall. .
	EXPERIMENT 2: Around a magnet is a invisible magnetic field. Inside this field works the magnet. You can find out what this field is like, by taking a plastic plate or so and sprinkle filings on it. Hold a magnet in one way under it (best is a iron magnet) and tick the plate carefully. The filings will form a line patron on the plate. How closer the lines, how stronger the magnetic field is. c
	EXPERIMENT 3: You can make a compass yourself, by rubbing 20 times with the south pole of a magnet in the length over the eye of a needle. Fasten a long small thread to the middle of a needle and the needle will point to the north. .
	EXPERIMENT 4: With balls out of a ball-bearing you can do an experiment too. Hang the balls one by one on the magnet. The magnetic field of the magnet penetrates each ball and makes that ball magnetic. If you have done experiment 1, you know that the magnetic field continually becomes weaker if you go further of the magnet. Through that is it that only a few balls can hang on the magnet. You can try to take the uppermost ball and the magnet and move up the magnet slowly. After a while some balls will fall, because the magnetic field is too weak there to attract the balls. .