# Otto Grotrian

> German physicist, electrical engineer and university lecturer (1847-1921)

**Wikidata**: [Q55844008](https://www.wikidata.org/wiki/Q55844008)  
**Source**: https://4ort.xyz/entity/otto-grotrian


## References

1. Integrated Authority File
2. Hessian Biography
3. Catalog of the German National Library
4. Virtual International Authority File
5. CiNii Research