Slo-Mo Footage Of a Magnet on a Trampoline Reveals its Invisible Forces

You might recall that grade-school experiment where an iron filing-covered sheet of paper draped over a magnet reveals the invisible lines of its magnetic forces. But with a strong enough magnet (the kind they won’t let you play with in school) and a miniature trampoline, you can actually see those invisible magnetic…

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from Gizmodo http://bit.ly/2Ty9aEm

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