Posts byEric Copenhaver

How lasers size up the shrinking proton

Update from author (October 2017): New hydrogen spectroscopy results, with terrific precision, were published at long last on October 6. Before these data, all measurements made with hydrogen agreed with each other, but strongly disagreed with muonic hydrogen spectroscopy. Now, the tables have turned. The new spectroscopy is consistent with what looked to be recalcitrant muonic
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