Smog

Smog
  Originally "smog" meant a mixture of smoke and fog. The definition has expanded to mean air that has restricted visibility due to pollution. Pollution formed in the presence of sunlight is called photochemical smog. According to the U.S. EPA, smog is "a mixture of pollutants, principally ground-level ozone, produced by chemical reactions in the air involving smog-forming chemicals. A major portion of smog-formers come from burning of petroleum-based fuels such as gasoline. Other smog-formers, volatile organic compounds, are found in products such as paints and solvents. Smog can harm health, damage the environment and cause poor visibility. Major smog occurrences are often linked to heavy motor vehicle traffic, sunshine, high temperatures and calm winds or temperature inversion (weather condition in which warm air is trapped close to the ground instead of rising). Smog is often worse away from the source of the smog-forming chemicals, since the chemical reactions that result in smog occur in the sky while the reacting chemicals are being blown away from their sources by winds."

Energy terms . 2014.

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  • smog — smog …   Dictionnaire des rimes

  • Smog — is a kind of air pollution; the word smog is a portmanteau of smoke and fog. Classic smog results from large amounts of coal burning in an area caused by a mixture of smoke and sulfur dioxide. Modern smog does not usually come from coal but from… …   Wikipedia

  • SMOG — (Simple Measure of Gobbledygook) is a readability formula that estimates the years of education needed to completely understand a piece of writing. SMOG is widely used, particularly for checking health messages.cite journal |last=Ley |first=P.… …   Wikipedia

  • smog — s.n. Ceaţă deasă, amestecată cu fum şi cu praf industrial, formată în regiunile industrializate sau în marile oraşe, cu efecte dăunătoare asupra sănătăţii populaţiei. – Din engl. smog. Trimis de RACAI, 07.12.2003. Sursa: DEX 98  smog s. n.… …   Dicționar Român

  • smog — [ smɔg ] n. m. • 1905; mot angl., de smoke « fumée » et fog « brouillard » ♦ Anglic. Brouillard épais formé de particules de suie et de gouttes d eau, dans les régions humides et industrielles. ● smog nom masculin (anglais smog, de smoke, fumée,… …   Encyclopédie Universelle

  • Smog — Sm erw. fach. (20. Jh.) Entlehnung. Entlehnt aus ne. smog, einer Kreuzung aus ne. smoke Rauch und ne. fog Dunst, Nebel .    Ebenso nndl. smog, ne. smog, nschw. smog, nnorw. smog; Smoking. ✎ DF 4 (1978), 241f.; Rey Debove/Gagnon (1988), 934;… …   Etymologisches Wörterbuch der deutschen sprache

  • smog — smòg s.m.inv. CO coltre di nebbia densa e scura costituita da vapore acqueo misto a fumi e altri residui di combustione, che ristagna spec. sui grandi centri urbani o industriali: lo smog inquina l aria delle grandi città, prendere provvedimenti… …   Dizionario italiano

  • smog — smog·gy; an·ti·smog; smog·less; smog; …   English syllables

  • smog — smȍg m DEFINICIJA ekol. 1. magla s visokim stupnjem onečišćenja od industrijskih emisija i automobilskih ispušnih plinova 2. meton. zagađenje zraka proizvodima izgaranja SINTAGMA fotokemijski smog smog koji je nastao oksidacijom hidrougljika,… …   Hrvatski jezični portal

  • smog|gy — «SMOG ee», adjective, gi|er, gi|est. full of smog: »There was a virus in the…smoky, smoggy air (Newsweek) …   Useful english dictionary

  • Smog — der; [s], s <aus gleichbed. engl. smog, zusammengezogen aus smoke »Rauch« u. fog »Nebel«> dicke, undurchdringliche, aus Rauch u. Schmutz bestehende Dunstglocke über Industriestädten …   Das große Fremdwörterbuch

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