Lamb shift

British

noun

the small difference in energy between two states of the hydrogen atom detected by Willis Eugene Lamb (1913–2008), the US physicist

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Lamb shift

Inspired by Bethe’s quick calculation of this Lamb shift, Feynman developed techniques to solve that problem and beyond, to the widest range of quantum electrodynamic interactions between charged particles.

From Nature ● May 7, 2018

Their indirect effects can nonetheless be measured, and their existence has been confirmed by a small shift, called the Lamb shift, which they produce in the spectrum energy of light from excited hydrogen atoms.

From BBC ● Feb. 2, 2016

In other words, they’re measuring the Lamb shift.

From Scientific American ● Apr. 19, 2013

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