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Sand Pendulums replaced Iron Filings or Paint // Homemade Science with Bruce Yeany

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 Physics   |   Science
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The sand pendulum that traces out patterns has always been a popular device in my classroom. After building and trying the basic piece, here are some additional variations that have been suggested for its use. Using a magnetic sheet and having the pendulum drop iron filings instead of sand traces out a pattern with more detail than using sand. Paint can also be used to replace the sand to make the patterns more permanent, use spray adhesive and make the pattern into a poster

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