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Making magnets.
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A diagram showing a detail part of a guitar.
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Unlike poles attract: When magnets are put together, N-pole to...
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Like poles repel: When magnets are put together, N-pole to N o...
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Young boy holding a bar magnet and a mounted magnet, one in ea...
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You will need: Yellow saucer; slice of cork; large sewing need...
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Tape the needle to a broad, flat cork and float the cork in a ...
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You will need: two corks with screws in them and paper 'flags'...
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Making a solenoid: Wrap the copper wire tightly aound the iron...
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Instant lift: Front view of a girl testing the solenoid by pic...
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You will need: wooden base; clean can; dowel; balsa block; thu...
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Girl using the buzzer, pressing the switch connected to the ba...
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Stick the dowel upright on the wood base. Make sure there are ...
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Taking great care to avoid cutting fingers on sharp edges, use...
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Bend the spring as shown in the diagram and stick a 4 inch nai...
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Stick circles of card on each end of the nail. Also in view is...
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Make sure you wind the wire on to both nails in one long stran...
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Wrap wire from one solenoid around a thumbtack and push into t...
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Door bells use the magnetism of electrified coils to pull a ha...
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You will need: two bar magnets; copper wire on a reel; two bat...
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