half-life exchange
101Nuclear fuel cycle — The nuclear fuel cycle, also called nuclear fuel chain, is the progression of nuclear fuel through a series of differing stages. It consists of steps in the front end, which are the preparation of the fuel, steps in the service period in which… …
102Mod (computer gaming) — Mod or modification is a term generally applied to computer games, especially first person shooters, RPGs and real time strategy games. Mods are made by the general public or a developer, and can be entirely new games in themselves, but mods are… …
103physical science — physical scientist. 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy. 2. these sciences collectively. [1835 45] * * * Introduction the systematic study of the inorganic world …
104Americium — (pronEng|ˌæməˈrɪsiəm) is a synthetic element that has the symbol Am and atomic number 95. A radioactive metallic element, americium is an actinide that was obtained in 1944 by bombarding plutonium with neutrons and was the fourth transuranic… …
105Dalek — This article is about the fictional species. For the 1963 serial, see The Daleks. For the 2005 episode, see Dalek (Doctor Who episode). For other uses, see Dalek (disambiguation). Doctor Who alien …
106Silver — This article is about the chemical element. For the color, see Silver (color). For other uses, see Silver (disambiguation). palladium ← silver → cadmium …
107Primidone — Systematic (IUPAC) name 5 ethyl 5 phenyl hexahydropyrimidine 4,6 dione Clinical data Pregnancy cat. D …
108History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
109Fission products (by element) — On this page, a discussion of each of the main elements in the fission product mixture from the nuclear fission of an actinide such as uranium or plutonium is set out by element. Krypton 83 86 Krypton 85 is formed by the fission process witha… …
110Syd Barrett — in 1969 Background information Birth name Roger Keith Barrett Born 6 January 1946( …
