
The SciencesAugust 1, 1949
Radioactivity and Time
The regular decay of radioactive isotopes provides evidence of the age of Egyptian tombs, Pleistocene sediments, pre-Cambrian rocks and the earth itself

Radioactivity and Time
The regular decay of radioactive isotopes provides evidence of the age of Egyptian tombs, Pleistocene sediments, pre-Cambrian rocks and the earth itself