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Units: CGS SI

Physical Constants

Physics Conversions:
Isotope Data
Decay Calculator
Type in the initial amount: Ci mCi uCi nCi Bq kBq MBq
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This is just an attempt to show some of the programming possible with JavaScript. The decay calculator should work with any of the 294 nuclides in the data base. The half-lives are from the Chart of the Nuclide 14th edition (GE), atomic masses are from NNDC 1993 Values.

Most of the JavaScript code for this calculator came (with permission) from the Scientific Calculator by Rolf Howarth. ( and Astromomy Calculator by Chris Dolan .

The decay calculator is based on the excellent work of Brian Smith ( as seen on the UCSC Radiation Safety Office's Web Site.

Last updated: 11/19/98

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