# classical electron radius

> physical constant providing length scale to interatomic interactions

**Wikidata**: [Q2152581](https://www.wikidata.org/wiki/Q2152581)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Classical_electron_radius)  
**Source**: https://4ort.xyz/entity/classical-electron-radius


## References

1. Freebase Data Dumps. 2013
2. 2018 CODATA recommended values
3. [Source](http://physics.nist.gov/cgi-bin/cuu/Value?re)
4. ISO 80000-10:2019 Quantities and units — Part 10: Atomic and nuclear physics
5. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)