Physics references

Physical constants
Periodic table
Table of Nuclides
Radioactive dating
 

Links of Scientific Sites and Organizations 

Oak Ridge National Laboratory (ORNL )
Argonne National Laboratory
Scientific American 
National Institute of physics
NASA
NSF
DOE
The University of Iowa - Physics Department
Vanderbilt University Physics Department - Vandy
American Physical sociaty (APS)
Kentucky Academy of Science ( KAS)
Kentucky Association of Physics Teachers (KAPT)