https://de.wikipedia.org/w/api.php?action=feedcontributions&feedformat=atom&user=200.43.201.80Wikipedia - Benutzerbeiträge [de]2025-06-05T02:45:33ZBenutzerbeiträgeMediaWiki 1.45.0-wmf.3https://de.wikipedia.org/w/index.php?title=Petrichor&diff=97580169Petrichor2007-08-09T13:58:59Z<p>200.43.201.80: Undid revision 149435283 by Beetstra (talk)</p>
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<div>'''Petrichor''' ([[International Phonetic Alphabet|IPA]]: pět'ɹǐkəɹ) (from [[Greek language|Greek]] ''petros'', "stone" + [[ichor]]) is the [[olfaction|scent]] of [[rain]] on dry earth; more specifically, it is the name of the yellow organic [[oil]] that yields this scent. The term was coined by two [[Australia]]n researchers in [[1964]] for an article in the journal ''[[Nature (journal)|Nature]]''. In the article, the smell is shown to derive from an oil exuded by certain [[plants]] during dry periods, whereupon it is [[adsorb]]ed by [[clay]]-based [[soil]]s and [[rock (geology)|rocks]]. During rain, the oil is released into the air along with another compound, [[geosmin]], producing the distinctive scent. In a follow up paper, the researchers showed the oil retards seed germination and early plant growth.<br />
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The scent is generally regarded as pleasant and refreshing, and is one of the most frequently cited "favorite smells". In desert regions, the smell is especially strong during the first rain after a long dry spell. The oil yielding the scent can be collected from rocks and concentrated to produce [[perfume]]. However, it has yet to be synthesized, perhaps due to its complexity. It is composed of more than fifty distinct chemical substances. <br /><br /><br />
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== Usage ==<br />
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Ever since I read that poem (Tewkesbury Road by John Masefield) in elementary school, I have reflected on the pleasant smell that often accompanies the first rain after a long period of warm, dry weather. Only recently did I find out, serendipitously, that two Australian scientists, I.J. Bear and R.G. Thomas had studies the very same phenomenon and coined the word "petrichor" to name that aroma. -- Ramnath Subramanian in "Words offer many bridges to learning;" El Paso Times, June 16, 2005.<br /><br />
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==References==<br />
* I. J. Bear & R. G. Thomas: "Nature of argillaceous odour", ''Nature'' '''201'''(4923):993-995 (Mar 1964)<br />
* I. J. Bear & R. G. Thomas: "Petrichor and plant growth", ''Nature'' '''207'''(5005):1415-1416 (Sep. 1965)<br />
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==External link==<br />
*[http://www.wordsmith.org/words/petrichor.html ''Petrichor'' at "A Word a Day"]<br />
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[[Category:Organic compounds]]<br />
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[[es:Petrichor]]<br />
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