Hank uses a favorite subject of the YouTube community - the potato gun - to teach us about the principles of pneumatics, which use the potential energy of compressed gas to do work in lots of useful machines every day.

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Potato cannons, launchers and spud guns have been destroying potatoes for a very long time. What a waste of perfectly good spuds. But what if a potato cannon could fire chips, shoot them directly into a deep fat fryer and make a...

My friend & I collaborated in Dropbox Paper to build a collapsible glider for a potato cannon!