subcritical
31Prompt critical — In nuclear engineering, an assembly is prompt critical if for each nuclear fission event, one or more of the immediate or prompt neutrons released causes an additional fission event. This causes a rapidly exponential increase in the number of… …
32Pitchfork bifurcation — In bifurcation theory, a field within mathematics, a pitchfork bifurcation is a particular type of local bifurcation. Pitchfork bifurcations, like Hopf bifurcations have two types supercritical or subcritical. In flows, that is, continuous… …
33atomic bomb — 1. a bomb whose potency is derived from nuclear fission of atoms of fissionable material with the consequent conversion of part of their mass into energy. 2. a bomb whose explosive force comes from a chain reaction based on nuclear fission in U… …
34Fat Man — This article is about the World War II nuclear weapon. For other uses, see Fat Man (disambiguation). Fat Man (Atomic Bomb) Mockup of the original weapon …
35Muon-catalyzed fusion — This article refers to the original use of the term cold fusion. For the controversial experiments known as cold fusion, see Cold fusion. For other uses, see Cold Fusion (disambiguation). Muon catalyzed fusion (μCF) is a process allowing nuclear… …
36Stress corrosion cracking — (SCC) is the unexpected sudden failure of normally ductile metals or tough thermoplastics subjected to a tensile stress in a corrosive environment, especially at elevated temperature (in the case of metals). SCC is highly chemically specific in… …
37Gun-type fission weapon — Gun type fission weapons are fission based nuclear weapons whose design assembles their fissile material into a supercritical mass by the use of the gun method: shooting one piece of sub critical material into another. Although this is sometimes… …
38Fracture toughness — In materials science, fracture toughness is a property which describes the ability of a material containing a crack to resist fracture, and is one of the most important properties of any material for virtually all design applications. It is… …
39Nevada National Security Site — Nevada Test Site November 1951 nuclear test at Nevada Test Site. Test is shot Dog from Operation Buster, with a yield of 21 kilotonnes of TNT (88 TJ). It was the f …
40Agua sobrecalentada — La expresión agua sobrecalentada se refiere al agua cuya temperatura está comprendida entre el punto de ebullición (100 °C) y la temperatura crítica (374° C) y que se mantiene líquida por efecto de la presión. También se conoce como agua… …
