# Lamb shift

> difference in energy of hydrogenic atom electron states not predicted by the Dirac equation

**Wikidata**: [Q631614](https://www.wikidata.org/wiki/Q631614)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Lamb_shift)  
**Source**: https://4ort.xyz/entity/lamb-shift


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)