How to collect black sand with a magnet

29 May, 2018
Build. Observe. Play in the sand and dirt. Making your own easy-to-build squeeze box is fun for lots of different reasons, including educational ones. This Science Snacks video with Eric Muller from The Exploratorium ... What happens to a cluster of grapes when it's in between two large, very strong and potentially dangerous neodymium magnets as they collide? Science pr
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