Ledermann said the plant's discharge was " 1 percent of natural radioactivity ."
2.
In 1904, " Nature " published a study on the natural radioactivity of different mineral waters.
3.
Boron occurs sparsely, probably because bombardment by the subatomic particles produced from natural radioactivity disrupts its nuclei.
4.
Gamma ray logging apparently takes advantage of potassium's natural radioactivity, while potassium-argon dating is useful for dating deposits.
5.
Curie began her research with her parents Marie Curie and Pierre Curie studying natural radioactivity found in radioactive isotopes.
6.
The annual doses people receive from emissions of technetium-99 are " tiny " compared to those from natural radioactivity, the company maintains.
7.
A measuring station for the permanent monitoring of the artificial and natural radioactivity in the atmosphere has existed on the Schauinsland since 1957.
8.
The scintillator is to be used in a neutrino detection project in Japan that requires material as free from natural radioactivity as possible.
9.
In 1911 he had used natural radioactivity, in the form of alpha particles, in the first man-made nuclear transmutation, converting nitrogen nuclei into oxygen.
10.
The gamma ray log, measuring the natural radioactivity, was introduced by Well Surveys Inc . in 1939, and the WSI neutron log came in 1941.
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