# becquerel

> SI unit of activity of a radioactive substance

**Wikidata**: [Q102573](https://www.wikidata.org/wiki/Q102573)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Becquerel)  
**Source**: https://4ort.xyz/entity/becquerel


## References

1. SI Brochure (9th edition)
2. ISO 80000-1: Quantities and units—Part 1: General
3. ISO 80000-1:2009 Quantities and units—Part 1: General
4. SI Brochure (9th edition): Concise summary
5. SI Brochure (8th edition)
6. Freebase Data Dumps. 2013
7. Logopedia