long-lived waste
41Land-Tenure in the Christian Era — • The way in which land has been held or owned during the nineteen hundred years which have seen in Europe the rise and establishment of the Church is a matter for historical inquiry. Strictly speaking, the way in which such ownership or tenure… …
42Nuclear fission product — Nuclear fission products are the atomic fragments left after a large atomic nucleus fissions. Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons and a large release of energy… …
43Deep geological repository — Technicians emplacing transuranic waste at the Waste Isolation Pilot Plant, near Carlsbad, New Mexico A deep geological repository is a nuclear waste repository excavated deep within a stable geologic environment (typically below 300 m or 1000… …
44Nuclear power debate — For nuclear energy policies by nation, see Nuclear energy policy. For public protests about nuclear power, see Anti nuclear movement. Three of the reactors at Fukushima I overheated, causing meltdowns that eventually led to hydrogen explosions,… …
45Isotopes of caesium — Caesium (Cs) has 40 known isotopes. The atomic masses of these isotopes range from 112 to 151. Only one isotope, 133Cs, is stable. The longest lived radioisotopes are 135Cs with a half life of 2.3 million years, 137Cs with a half life of 30.1671… …
46Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …
47List of creatures in Primeval — The following is a complete list of creatures from the universe of ITV science fiction television series Primeval and also any spin off merchandise. The series includes various imaginary species which are not native to the series setting, with… …
48nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …
49Nuclear reactor technology — This article is a subarticle of Nuclear power .A nuclear reactor is a device in which nuclear chain reactions are initiated, controlled, and sustained at a steady rate, as opposed to a nuclear bomb, in which the chain reaction occurs in a… …
50Sellafield — Aerial view of the site …
