actinide hypothesis

См. также в других словарях:

• Actinide — 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 …   Wikipedia

• Glenn T. Seaborg — Born April 19, 1912(1912 04 19) Ishpeming, Michigan, USA …   Wikipedia

• History of the periodic table — The history of the periodic table reflects over a century of growth in the understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon… …   Wikipedia

• nuclear fission — fission (def. 2). [1885 90] * * * Division of a heavy atomic nucleus into two fragments of roughly equal mass, accompanied by the release of a large amount of energy, the binding energy of the subatomic particles. The energy released in the… …   Universalium

• Nuclear reactor — Core of CROCUS, a small nuclear reactor used for research at the EPFL in Switzerland This article is a subarticle of Nuclear power. A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are… …   Wikipedia

• Neutron — This article is about the subatomic particle. For other uses, see Neutron (disambiguation). Neutron The quark structure of the neutron. (The color assignment of individual quarks is not important, only that all three colors are present.)… …   Wikipedia

• Georeactor — The georeactor is a proposal by J. Marvin Herndon that a nuclear fission reactor may exist and operate at the Earth s core and serves as the energy source for the geomagnetic field. Herndon had earlier proposed the existence of fission reactors… …   Wikipedia

• Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …   Wikipedia

• Cluster de cancer — Un cluster de cancer est une occurrence de cancers plus élevée que la normale au sein d une population donnée, dans une aire géographique déterminée ou sur une période de temps donnée. Ce problème de santé publique est un objet d étude… …   Wikipédia en Français

• Liste des clusters de cancer — Cluster de cancer Un cluster de cancer est une occurrence de cancers plus élevée que la normale au sein d une population donnée, dans une aire géographique déterminée ou sur une période de temps donnée. Ce problème de santé publique est un objet… …   Wikipédia en Français

• transuranium element — Any of the chemical elements after uranium in the periodic table (with atomic numbers greater than 92). All are radioactive (see radioactivity), with half lives ranging from tens of millions of years to fractions of a millisecond. Only two,… …   Universalium