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Snack name |
Description |
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You can make a magnetic field that's stronger than the earth's! |
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Two parallel, current-carrying wires exert forces on each other. |
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When a piece of iron gets too hot, it is no longer attracted to a magnet. |
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A grape is repelled by both the north and south poles of a strong rare-earth magnet. The grape is repelled because it contains water, which is diamagnetic. Diamagnetic materials are repelled by magnetic poles. |
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A magnet falls more slowly through a metallic tube than it does through a nonmetallic tube. |
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Iron filings will trace out the lines of a magnetic field in three dimensions. |
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Copper coils become electromagnetic swings. |
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Explore magnetic shielding, lines of force and the concept of permeabllity with low cost material. |
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This experiment shows how your doorbell works. |
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A magnet exerts a force on a current-carrying wire. |
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The attraction and repulsion of magnets produces entrancing, unpredictable motion. |
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As motors go, this is about as simple as it gets. |