PROF. SODDY'S letter in NATURE of February 4 would seem to lead to certain interesting conclusions about the structure of the atom. It is easy to show that two elements of different atomic weight must ...

Millicurie quantities of 14 C do not present a significant external exposure hazard because the low-energy betas emitted barely penetrate the outer skin layer. The critical organ for uptake of many 14 ...

Scientists have measured the half-lives of five never-before-seen isotopes in a first demonstration of a research facility that will help probe the nuclear structures of elements (Phys. Rev. Lett.

With five more protons than should be stable, the newly discovered nitrogen-9 isotope sits right on the borderline of physical possibility. When you purchase through links on our site, we may earn an ...

Separating different versions of elements—isotopes—is an excruciatingly difficult task: They differ by just one or two extra neutrons, an infinitesimal difference in mass. But University of Chicago ...

This Section implements all activities of the IAEA's Water Resources Programme, which promotes and transfers know-how on the use of isotope hydrology as an effective tool for water resources ...

DR. LINDEMANN (NATURE, March 4) deduces that the vapour pressure of lead from radio-active origin, or of radium D, should be very considerably different from ordinary lead at comparatively low ...