Friar, J. L.Martorell Domenech, JuanSprung, Donald W. L.2009-10-062009-10-0619991050-2947https://hdl.handle.net/2445/9561Recent improvements in the determination of the running of the fine-structure constant also allow an update of the hadronic vacuum-polarization contribution to the Lamb shift. We find a shift of -3.40(7) kHz to the 1S level of hydrogen. We also comment on the contribution of this effect to the determination by elastic electron scattering of the rms radii of nuclei.3 p.application/pdfeng(c) The American Physical Society, 1999Teoria atòmicaElectrodinàmica quànticaElectronic structureEstructura electrònicaQuantum electrodynamicsAtomic theoryinfo:eu-repo/semantics/article181569info:eu-repo/semantics/openAccess