Building a gauss rifle

72879699 998E18707D TIn MAKE 01 we showed you how to make a “gauss rifle” – A linear accelerator for studying high-energy physics costs around $5 billion. But you can make one for about 30 bucks with four strong magnets, a wooden ruler, some plastic tape, and nine steel balls. Here is Daniel’s photo set on Flickr of the one he’s making… Link.


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