The loose assemblage of paper and string Manu Prakash pulls from his pocket doesn't look like much. And in a way, it's not---just 20 cents' worth of materials you can buy at an art supply store. But ...
This toy-inspired centrifuge could enable medical testing in remote locations, and costs just 20 cents to make. This video was reproduced with permission and was first published on January 10, 2017.
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