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December 17, 2021 |
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FROM THE STORE  | | |
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BRING SCIENCE HOME  | Spinning Symmetry with Pinwheels | Why do wind turbines and airplane propellers look the way they do? The secret is in the symmetry. Learn why engineers design them this way with this fun, hands-on activity. Give it a whirl! Credit: George Retseck | Have you ever played with a toy pinwheel—or seen larger real-life versions, such as a windmill or wind turbine? Have you wondered why they look the way they do—with multiple blades, arranged symmetrically? Why can't they get away with just one blade? Or blades of different shapes and sizes? Try this fun project to find out! | | | |
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