A new measurement bolsters the case for a (slightly) smaller proton
The PRad physics experiment studies how electrons scatter off of protons
![proton illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/11/103118_EC_proton-size_feat.jpg?fit=860%2C460&ssl=1)
EXTRA SMALL Protons are small, but scientists disagree on exactly how small. A new finding from the PRad physics experiment suggests that the subatomic particle is extra tiny.
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