• NIST X-Ray and Gamma-Ray Attenuation Coefficients
• Links to selected scientific data (Great place to look!)
• The 1998 CODATA Recommended Values of the Fundamental Physical Constants
• Conversion factors for energy equivalents
• Washington Department of Transportation has a really useful conversion home page
• Weights and Measures
• Nuclear wallet cards, Atomic Masses, Nuclear data (NNDC data base)
• Very good Web Periodic Table
• Chart of the Nuclides
• Our Glossary of Radiation Related Terms
• HP conversion spread sheet - U.S. to SI units, some SI to US ( MS Excel® 5.0 for a PC and is self extracting) Note: this also contains spread sheets for specific activity, mass-activity conversions, mol and mass ratios in chemical formulas. It is still being worked on, slowly.

Other Useful Information

Our Calculator

On-line Calculators

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