general reactor equation
41rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …
42Abdul Qadeer Khan — HI, NI (twice) Abdul Qadeer Khan, 1999. Born 1 April …
43Speed of light — The speed of light in the vacuum of free space is an important physical constant usually denoted by the letter c . [NIST and BIPM practice is to use c 0 for the speed of light in vacuum in accord with international standard ISO 31 5. See… …
44Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
45Modern portfolio theory — Portfolio analysis redirects here. For theorems about the mean variance efficient frontier, see Mutual fund separation theorem. For non mean variance portfolio analysis, see Marginal conditional stochastic dominance. Modern portfolio theory (MPT) …
46Anaerobic digestion — and regenerative thermal oxidiser component of Lübeck mechanical biological treatment plant in Germany, 2007 …
47isotope — isotopic /uy seuh top ik/, adj. isotopically, adv. /uy seuh tohp /, n. Chem. any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in… …
48Dates of 2005 — ▪ 2006 January This is a unique case of a people under occupation being asked to hold free and fair elections when they themselves are not free.… It s an important internal test, and I think it s a turning point. Palestinian legislator Hanan… …
49Chemical kinetics — Reaction rate tends to increase with concentration a phenomenon explained by collision theory. Chemical kinetics, also known as reaction kinetics, is the study of rates of chemical processes. Chemical kinetics includes investigations of how… …
50Réaction nucléaire — Une réaction nucléaire est une transformation d un ou plusieurs noyaux atomiques, elle se distingue d une réaction chimique qui concerne les électrons ou les liaisons entre les atomes. Dans une réaction nucléaire, deux noyaux atomiques entrent en …
