the average life of an isotope

См. также в других словарях:

• Isotope geochemistry — is an aspect of geology based upon study of the relative and absolute concentrations of the elements and their isotopes in the Earth. Broadly, the field is divided into two branches: stable and radiogenic isotope geochemistry.Lead lead isotope… …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• Isotope — This article is about the atomic variants of chemical elements. For the British jazz fusion band, see Isotope (band). Isotopes redirects here. For the minor league baseball team, see Albuquerque Isotopes. Isotopes are variants of atoms of a… …   Wikipedia

• isotope — 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… …   Universalium

• Half-life — This article is about the scientific and mathematical term. For other uses, see Half life (disambiguation). Number of half lives elapsed Fraction remaining Percentage remaining 0 1/1 100 1 1/2 50 2 …   Wikipedia

• mean life — Physics. 1. the average time that an unstable particle or nucleus survives before it decays. 2. See decay time. Also called average life, lifetime. * * * In radioactivity, the average lifetime of all the nuclei of a particular unstable atomic… …   Universalium

• Actinides in the environment — refer to the sources, environmental behaviour and effects of actinides in the environment. Environmental radioactivity is not limited solely to actinides; also, actinides such as uranium and radium specifically are of note. Inhalation versus… …   Wikipedia

• Geology of the Moon — The geology of the Moon (sometimes called selenology, although the latter term can refer more generally to lunar science ) is quite different from that of the Earth. The Moon lacks a significant atmosphere and any bodies of water, which… …   Wikipedia

• List of companies in the nuclear sector — Here is a list of all large companies which are active along the nuclear chain, from uranium mining, processing and enrichment, to the actual operating of nuclear power plant and waste processing. Company name Country of origin Category Brief… …   Wikipedia

• Nuclear energy in the European Union — Infobox Geopolitical organisation native name = European Union Countries with Nuclear Energy The nuclear energy in the European Union accounts approximately 15% of total energy consumption. The energy policies of the European Union (EU) member… …   Wikipedia

• agricultural sciences, the — Introduction  sciences dealing with food and fibre production and processing. They include the technologies of soil cultivation, crop cultivation and harvesting, animal production, and the processing of plant and animal products for human… …   Universalium