atomic energetics
11radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
12Energy — This article is about the scalar physical quantity. For other uses, see Energy (disambiguation). Energetic redirects here. For other uses, see Energetic (disambiguation) …
13Directed-energy weapon — This article is about practical experiments with energy weapons. For fictional uses, see raygun. Humvee with Active Denial System mounted A directed energy weapon (DEW) emits energy in an aimed direction without the means of a projectile. It… …
14Dieter Gruen — Dieter M. Gruen, an internationally respected innovator[peacock term], is a senior scientist in the Materials Science Division at Argonne National Laboratory. He received B.S. (1944, cum laude) and M.S. (1947) degrees in chemistry from… …
15Champ de force (chimie) — Pour les articles homonymes, voir champ de force. Un champ de force peut par exemple être utilisé afin de minimiser l énergie d étirement de cette molécule d éthane. Dans le cadre de la m …
16chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
17Defining equation (physical chemistry) — For the detailed nature of defining equations see Physical quantity Main article: Physical chemistry In physical chemistry, there are numerous quantities associated with chemical compounds and reactions; notably in terms of amounts of substance,… …
18Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …
19Mole (unit) — This article is about physical quantity measurement unit. For other uses, see Mole (disambiguation). The mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as an amount of a substance that contains …
20radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …
