# einstein

> obsolete unit measuring either one mole of photons or the energy of one mole of photons

**Wikidata**: [Q901448](https://www.wikidata.org/wiki/Q901448)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Einstein_(unit))  
**Source**: https://4ort.xyz/entity/einstein-q901448-2


## References

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