artificial radioactivity
121Sustainable energy — Renewable energy …
122List of civilian radiation accidents — This article lists notable civilian accidents involving radioactive materials or involving ionizing radiation from artificial sources such as x ray tubes and particle accelerators. Accidents related to nuclear power that involve fissile materials …
123List of Statutory Instruments of the United Kingdom, 1993 — This is a complete list of all 1844 Statutory Instruments published in the United Kingdom in the year 1993. NOTOC 1 100* Environmental Protection (Controls on Injurious Substances) Regulations 1993 S.I. 1993/1 * Rail Crossing Extinguishment and… …
124Plutonium — (pronEng|pluːˈtoʊniəm, symbol Pu, atomic number 94) is a rare radioactive, metallic chemical element. The most significant isotope of plutonium is 239Pu, with a half life of 24,100 years; this isotope is fissile and is used in most modern nuclear …
125radium — /ray dee euhm/, n. 1. Chem. a highly radioactive metallic element whose decay yields radon gas and alpha rays. Symbol: Ra; at. wt.: 226; at. no.: 88. 2. a lustrous rayon or silk fabric constructed in plain weave and used in women s apparel,… …
126Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
127Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro …
128Rutherford , Ernest — Rutherford , Ernest, first baron Rutherford of Nelson (1871–1937) New Zealand physicist Rutherford, who was born at Nelson in New Zealand, was certainly the greatest scientist to emerge from that country; he can also fairly be claimed to be one… …
