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Science 20 March 1964:
Vol. 143. no. 3612, pp. 1324 - 1325
DOI: 10.1126/science.143.3612.1324-a
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Articles

Hydrogen Energy Levels: Perturbation Caused by Proton Structure

William S. Porter 1

1 Department of Physics, Bucknell University, Lewisburg, Pennsylvania

The shifts in the lowest electronic energy levels of the hydrogen atom caused by the extended charge distribution of the proton have been calculated and found to be of the order of the unexplained portion of the Lamb shift for these levels.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)