# Ora S. Duffendack

> American physicist

**Wikidata**: [Q99406329](https://www.wikidata.org/wiki/Q99406329)  
**Source**: https://4ort.xyz/entity/ora-s-duffendack


## References

1. [Source](https://www.gf.org/fellows/all-fellows/ora-s-duffendack/)
2. Mathematics Genealogy Project
3. [Source](http://faculty-history.dc.umich.edu/faculty/ora-s-duffendack)
4. [Source](https://michiganphysics.com/2012/10/21/michigan-and-the-first-atomic-clock/)
5. Virtual International Authority File
6. Library of Congress Name Authority File
7. [Source](https://www.gf.org/fellows/)