# square root of 2

> unique positive real number which when multiplied by itself gives 2

**Wikidata**: [Q389813](https://www.wikidata.org/wiki/Q389813)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Square_root_of_2)  
**Source**: https://4ort.xyz/entity/square-root-of-2


## References

1. RAMEAU
2. IdRef
3. Freebase Data Dumps. 2013
4. [The square root of 2 to 10 million digits](http://apod.nasa.gov/htmltest/gifcity/sqrt2.10mil)
5. Microsoft Academic