spontaneous transition
121Free space — In classical physics, free space is a concept of electromagnetic theory, corresponding to a theoretically perfect vacuum, and sometimes referred to as the vacuum of free space. The definitions of the ampere and meter SI units are based upon… …
122Induced gamma emission — In physics, induced gamma emission (IGE) refers to the process of fluorescent emission of gamma rays from excited nuclei, usually involving a specific nuclear isomer. It is analogous to conventional fluorescence, which is defined to be the… …
123KMS state — The statistical mechanics of quantum field theory (see thermal quantum field theory) at the inverse temperature beta; and chemical potential mu; can be characterized by a condition called the KMS condition.PreliminariesThe simplest case to study… …
124Collectivist anarchism — For the broad category of anarchism sometimes referred to as collectivist anarchism , see social anarchism. Part of the Politics series on Anarchism …
125Jaynes-Cummings model — The Jaynes Cummings model (JCM) is a theoretical model in quantum optics. It describes the system of a two level atom interacting with a quantized mode of an optical cavity, with or without the presence of light. The JCM is of great interest in… …
126Plutonium — (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 …
127Inflación cósmica — La inflación cósmica es un conjunto de propuestas en el marco de la física teórica para explicar la expansión ultrarrápida del universo en los instantes iniciales y resolver el llamado problema del horizonte. Contenido 1 Introducción 2 Motivación …
128china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material …
