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The experiments, which spanned more than a decade, suggest that the electron differs from being round by less than 0.000000000000000000000000001 cm. Just so you can get an estimate, if the electron were as big as the solar system, it would still be spherical to within the width of a human hair.

Squishy circuits are a project from the Thomas Lab at the University of St. Thomas.  The goal of the project is to design tools and activities which allow kids of all ages to create circuits and explore electronics using play dough. 

Deven Black about 11 hours ago Interactively control an $800,000 scanning electron microscope and use the build-in chat to send questions to scientists. Free.