# Petzval field curvature

> optical aberration

**Wikidata**: [Q7874190](https://www.wikidata.org/wiki/Q7874190)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Petzval_field_curvature)  
**Source**: https://4ort.xyz/entity/petzval-field-curvature


## References

1. Freebase Data Dumps. 2013