- isotopic weight
- атомный вес изотопа
Англо-русский строительный словарь. 2013.
isotopic weight
Смотреть что такое "isotopic weight" в других словарях:
isotopic fractionation — ▪ chemistry enrichment of one isotope relative to another in a chemical or physical process. Two isotopes of an element are different in weight but not in gross chemical properties, which are determined by the number of electrons. However,… … Universalium
Isotopic — Referring to an isotope, a form of a chemical element with the same atomic number as another element but having a different atomic mass. From the Greek iso , equal, the same + topos , place. Isotopes are used in a number of medical tests. * * *… … Medical dictionary
isotopic number — the number which when added to twice the atomic number gives the atomic weight … Medical dictionary
isotopic — adj. of an isotope, pertaining to a form of a chemical element which has the same atomic number as the other forms but a different atomic weight (Chemistry) … English contemporary dictionary
Atomic weight — (symbol: A sub|r) is a dimensionless physical quantity, the ratio of the average mass of atoms of an element (from a given source) to 1/12 of the mass of an atom of carbon 12.cite journal | author = International Union of Pure and Applied… … Wikipedia
atomic weight — Chem. the average weight of an atom of an element, formerly based on the weight of one hydrogen atom taken as a unit or on 1/16 the weight of an oxygen atom, but after 1961 based on 1/12 the weight of the carbon 12 atom. Abbr.: at. wt. [1820 30]… … Universalium
List of elements by atomic weight — This is a list of chemical elements, sorted by standard atomic weight (most stable isotope for artificial elements) and color coded according to type of element. Each element s atomic number, name, element symbol, and group and period numbers on… … Wikipedia
i.w. — isotopic weight … From formal English to slang
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
IW — noun the use of information or information technology during a time of crisis or conflict to achieve or promote specific objectives over a specific adversary or adversaries not everyone agrees that information warfare is limited to the realm of… … Useful english dictionary
i.w. — 1. inside width. 2. isotopic weight. * * * I.W., Isle of Wight. * * * abbr. ■ inside width ■ isotopic weight … Useful english dictionary
