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...pollution plume by a burst of rain often forms so called ''hot spots'' of radioactivity on the underlying surface.

...pollution plume by a burst of rain often forms so called ''hot spots'' of radioactivity on the underlying surface.

[[Radiometric Dating]] measures the steady decay of [[radioactivity|radioactive elements]] in an object to determine its age. It is used to cal

...mical elements. Many of the chemical elements have non-stable, so-called [[Radioactivity|radioactive]] isotopes, whose atomic nuclei emit [[matter]] and [[energy]].

| [[Radioactivity]] (decays per unit time)

...OE website page)</ref> The annual radiation dose (from naturally occurring radioactivity in coal) received by persons living within 80 km of a coal-fired power plan

...or long-term, but the nature of the physical resource (e.g., the declining radioactivity of a source) may affect its properties. It may be possible to compensate fo

* [[Instrumentation for radioactivity/Related Articles]]

...ie Curie|Maria Skłodowska-Curie]]: in Physics 1903, for the discovery of [[radioactivity]]; and in Chemistry 1911, for the isolation of [[radium|pure radium]]

The first 94 elements occur naturally on [[Earth]], although the [[radioactivity|radioactive]] elements [[technetium]], ''Z''=43, [[promethium]] ''Z''=61, [

* [[Template:Instrumentation for radioactivity/Metadata]]

...411 [[MeV]] of [[Gamma ray|gamma radiation]], significantly increasing the radioactivity of the weapon's [[Nuclear fallout|fallout]] for several days. Such a weapon

== Use of radioactivity in biology ==

...ntists continued during the Third Republic. [[Henri Becquerel]] discovered radioactivity in uranium salts and thus ushered in the atomic age. [[Pierre Curie|Pierre]