hjhutchinson

Instructables

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  A Simple Way to See Color Addition

  1 245
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  Speed of Sound Calculator Using Old Earbuds

  3 345
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  Make Doppler Effect Demonstrators

  1 697
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  Https://www.instructables.com/id/Spin-Art-Table-from-a-Window-Fan/

  1 121
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  Https://www.instructables.com/id/Light-Up-LED-Cards/

  1 179