= Robert Curtis Retherford
{c}
{tag=Physicist}
= Robert Retherford
{c}
{synonym}
= Robert C. Retherford
{c}
{synonym}
An experimental <atomic physicist> who, with <Willis Eugene Lamb Jr.>, measured the <Lamb shift> in 1947. Their microwave method distinguished <hydrogen> levels that the simplest relativistic theory placed at the same <energy>. The experiment made a small spectral discrepancy into a precise test, helping motivate improved calculations in <quantum electrodynamics>.<Fine Structure of the Hydrogen Atom by a Microwave Method by Willis Eugene Lamb Jr. and Robert Curtis Retherford>[Hydrogen microwave experiment, Physical Review 72, 241–243]{ref}
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