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The Water Cooler
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Ok this is just too cool.
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<blockquote data-quote="CBCollier" data-source="post: 1715576" data-attributes="member: 11348"><p>My son did this as his science fair project last year (he's 12). I didn't hurt that I used to work for a company that made NeFeB Magnets. All has to do with Eddy Currents. It can be done with a brass pipe as well, although it is not quite as spectacular. As to the post that talked about the "flashlights" that was the science fair project from the year before. Move a magnet through coils with different number of turns of wire, and measure the generated current. The magnets we used are about 1" long and about 3/4" in diameter. Use caution around electronics, I have wiped out a digital watch and have seen an early digital camera wiped out with a rare earth magnet.</p></blockquote><p></p>
[QUOTE="CBCollier, post: 1715576, member: 11348"] My son did this as his science fair project last year (he's 12). I didn't hurt that I used to work for a company that made NeFeB Magnets. All has to do with Eddy Currents. It can be done with a brass pipe as well, although it is not quite as spectacular. As to the post that talked about the "flashlights" that was the science fair project from the year before. Move a magnet through coils with different number of turns of wire, and measure the generated current. The magnets we used are about 1" long and about 3/4" in diameter. Use caution around electronics, I have wiped out a digital watch and have seen an early digital camera wiped out with a rare earth magnet. [/QUOTE]
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The Water Cooler
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Ok this is just too cool.
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