Scientists, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen. Scientists from the Max Planck ...
How big is the proton? This study and one of the prior studies have the diameter of the proton was about 0.83 femtometers (m). A femtometer is 10^-15 meters. The discrepancy between the size of the ...
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