nuclear reactivity
41inhour — (ih or inhr) a unit used in nuclear engineering to describe the reactivity of a nuclear reactor. In a reactor, fast moving neutrons break apart atoms of uranium or plutonium; the fission of these atoms releases additional neutrons which keep… …
42Pebble bed reactor — Sketch of a pebble bed reactor in Italian …
43Breeder reactor — Assembly of the core of Experimental Breeder Reactor I in Idaho, 1951 A breeder reactor is a nuclear reactor that generates more fissile material in fuel than it consumes.[1] These reactors are considered appealing due to their superior fuel… …
44Radical (chemistry) — Free radical redirects here. For other uses, see Free radical (disambiguation). Moses Gomberg (1866 1947), the founder of radical chemistry Radicals (often referred to as free radicals) are atoms, molecules, or ions with unpaired electrons on an… …
45Hypothetical types of biochemistry — are forms of biochemistry speculated to be scientifically viable but not proven to exist at this time. While the kinds of living beings we know on earth commonly use carbon for basic structural and metabolic functions, water as a solvent and DNA… …
46Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …
47Reactor operator — A reactor operator (or nuclear reactor operator) is an individual at a nuclear power plant who is responsible for directly controlling a nuclear reactor from a control panel and is the only individual at a nuclear power plant who can directly… …
48Список награждённых Национальной медалью науки США — Джошуа Ледерберг (справа) получает Национальную медаль науки из рук Президента США Джорджа Буша старшего Список …
49Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …
50Alkali metal — Group → 1 ↓ Period 2 3 Li 3 …
