# Hering illusion

> optical illusion

**Wikidata**: [Q2035662](https://www.wikidata.org/wiki/Q2035662)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hering_illusion)  
**Source**: https://4ort.xyz/entity/hering-illusion


## References

1. Freebase Data Dumps. 2013