Sentences with phrase «radioactive elements long»

To have ALWAYS existed, without any definite time of starting in the past, this «life» period of radioactive elements long ago would have run its course.

Not exact matches

Schwartz estimates the cobalt would take 53 years to return to non-dangerous levels, and that other radioactive elements could persist for much longer.

When Matter Did Not Exist The radioactive elements in existence today have not yet been in existence long enough to have run their course, and disintegrated into lead.

All radioactive elements would have long ago disintegrated into lead.

At the US government's Los Alamos National Laboratory in New Mexico, researchers are generating neutrons with a particle accelerator and using them to transmute long - lived radioactive elements.

For 26 years forests around Chernobyl have been absorbing radioactive elements, but a fire would send them skyward again — a concern as summers grow longer, hotter and drier

This effort doubles the amount of energy recovered from the fuel and removes most of the long - lived radioactive elements from the waste that must be permanently stored.

Scientists have long suspected that these elementary particles, which are produced by the decay of radioactive elements, have a unique trait — they can change, or «oscillate,» between their three known types, or «flavors» — the electron neutrino, the muon neutrino and the tau neutrino.

Although long thought to be stable, bismuth, as an element, was shown to be weakly radioactive, with an enormously long half - life period: 1 Watch Caiu na Net Video Caseiro Que Marido Corno Fe - free porn video on MecVideos

Problematic nuclear waste disposal for very long - lived radioactive elements (e.g. Yucca Mountain); 3.