In my article (D Featonby 2019 Phys. Educ. 54 017002) I asked whether it was possible to make the small propeller on the end of a notched pencil rotate by… Click to show full abstract
In my article (D Featonby 2019 Phys. Educ. 54 017002) I asked whether it was possible to make the small propeller on the end of a notched pencil rotate by stroking the pencil.
               
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