radioactivity / activity of a radionuclide · International / US legacy · Modern/historical
1 Ci = 3.7×10¹⁰ Bq
Converter
radioactivity / activity of a radionuclide · International · Modern
becquerel
exact
- Record
- M040
- Definition quality
- Standardized
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Definition
1 Bq = 1 s⁻¹
History & use
The 15th CGPM adopted the name becquerel in 1975 to extend SI use in ionizing-radiation work and reduce dangerous unit confusion.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high