# ray

> in geometrical optics: an idealized model of light; a line that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow

**Wikidata**: [Q633620](https://www.wikidata.org/wiki/Q633620)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ray_(optics))  
**Source**: https://4ort.xyz/entity/ray-q633620


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)