radioactivity to

* 1911 – Arthur Holmes uses radioactivity to date rocks, the oldest being 1. 6 billion years old

This fiery reaction burned off the nuclear fuel rod cladding, the hot plume of reacting steam and zirconium damaged the fuel pellets which released more radioactivity to the reactor coolant and produced hydrogen gas that is believed to have caused a small explosion in the containment building later that afternoon.

The containment building is the last of several safeguards that prevent the release of radioactivity to the environment.

During his tenure there, he founded the internationally renowned Berner Schule, whose thrust was the application of radioactivity to astrophysics, cosmochemistry, and geosciences.

In most organic synthesis work it is normal to try to create a product out of two approximately equal sized fragments and to use a convergent route, but when a radioactive label is added, it is normal to try to add the label late in the synthesis in the form of a very small fragment to the molecule to enable the radioactivity to be localised in a single group.

Depending on the amount of radioactivity administered, it can take days to weeks for the radioactivity to reduce to the point where the patient is not a radiation danger to bystanders.

This may also be combined with radioactivity to achieve apoptosis of malignant cells.

By total military use of weapons feasible today, the earth can be contaminated with radioactivity to such an extent that whole peoples can be annihilated.

Much of radiochemistry deals with the use of radioactivity to study ordinary chemical reactions.

With this method, the resolving power was less than 100 µm, but nonetheless he was able to localize the radioactivity to specific thyroid.