Polar effect — The Polar effect or electronic effect in chemistry is the effect exerted by a substituent on modifying electrostatic forces operating on a nearby reaction center. The main contributors to the polar effect are the inductive effect, mesomeric… … Wikipedia
polar effect — elektroninis reiškinys statusas T sritis Standartizacija ir metrologija apibrėžtis Elektronų tankio pasiskirstymas molekulės atomuose dėl nevienodo atomų elektrinio neigiamumo ir išorinio elektrinio lauko stiprio. atitikmenys: angl. electronic… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
polar effect — elektroninis reiškinys statusas T sritis fizika atitikmenys: angl. electronic effect; polar effect vok. elektronische Effekt, m rus. полярный эффект, m; электронный эффект, m pranc. effet électronique, m … Fizikos terminų žodynas
Polar effect (genetics) — Polar effect in genetics occurs when the mutation of one gene prevents other genes in the same operon from being transcribed … Wikipedia
Polar wind — is the permanent outflow of ionization from the polar regions of the magnetosphere. [http://amsglossary.allenpress.com/glossary/browse?s=p p=43 AMS Glossary] ] Ionospheric Plasma SourceThe ‘ground state’ of the ionosphere consists of the baseline … Wikipedia
Polar ecology — is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the northern hemisphere, and it contains land and the islands that surround it. Antarctic is… … Wikipedia
Polar cyclone — Polar cyclones (also known as polar vortices , Arctic cyclones , and sub polar cyclones ) are vast areas of low pressure which strengthen in the winter and weaken in the summer.Halldór Björnsson. [http://andvari.vedur.is/… … Wikipedia
Polar amplification — is defined by International Arctic Science Committee on page 23 of the Arctic Climate Impact Assessment Polar amplification (greater temperature increases in the Arctic compared to the earth as a whole) is a result of the collective effect of… … Wikipedia
Polar bear — This article is about the animal. For other uses, see Polar bear (disambiguation) … Wikipedia
Polar region — Earth s polar regions are the areas of the globe surrounding the poles also known as frigid zones. The North Pole and South Pole being the centers, these regions are dominated by the polar ice caps, resting respectively on the Arctic Ocean and… … Wikipedia
