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The next phase of the proton puzzle | Max-Planck-Gesellschaft

https://www.mpg.de/16115025/the-next-phase-of-the-proton-puzzle

Scientists at the Max Planck Institute of Quantum Optics (MPQ) have succeeded in testing quantum electrodynamics with unprecedented accuracy to 13 decimal places. The new measurement is almost twice as accurate as all previous hydrogen measurements combined and moves science one step closer to solving the proton size puzzle. This high accuracy was achieved by the Nobel Prize-winning frequency comb technique, which debuted here for the first time to excite atoms in high-resolution spectroscopy. The results are published today in Science.
However, while new measurements from Garching and Toronto