# theory of relativity

> two interrelated physics theories by Albert Einstein

**Wikidata**: [Q43514](https://www.wikidata.org/wiki/Q43514)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Theory_of_relativity)  
**Source**: https://4ort.xyz/entity/theory-of-relativity


## References

1. Nuovo soggettario
2. Freebase Data Dumps. 2013
3. BBC Things
4. YSO-Wikidata mapping project
5. BabelNet
6. [Source](https://thenextweb.com/vocabulary/theory-of-relativity/)
7. National Library of Israel
8. KBpedia
9. GF WordNet
10. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)