# Harold Lyons

> American physicist; developer of the first atomic clock

**Wikidata**: [Q106956598](https://www.wikidata.org/wiki/Q106956598)  
**Source**: https://4ort.xyz/entity/harold-lyons


## References

1. A Historical Review of U.S. Contributions to the Atomic Redefinition of the SI Second in 1967
2. [Source](https://sova.si.edu/record/NMAH.AC.0701)
3. [Source](https://michiganphysics.com/2012/10/21/michigan-and-the-first-atomic-clock/)