Shall we play a game - of Wiffle ball? Invented in 1953, this lightweight alternative to a baseball is perfectly suited for back yard romping. Today we explain why the design of the Wiffle ball guarantees that you don't need a strong arm to throw a variety of pitches.

More about Jenn Stroud Rossmann's work on Wiffle Balls here:
https://www.theatlantic.com/technology/archive/2017/09/wiffle-ball-physics/539982/

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