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Why polish things shine?​

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Open main menuWikipediaSearchWiki Loves MONUMENTS: Photograph a monument, help Wikipedia and win!Learn morePolishingLanguageDownload PDFWatchEditFor other uses, see Polish (disambiguation).Learn moreThis article needs additional citations for verification.Polishing is the process of creating a smooth and shiny surface by rubbing it or using a chemical action, leaving a surface with a significant specular reflection (still limited by the index of refraction of the material according to the Fresnel equations.)[1] In some materials (such as metals, glasses, black or transparent stones), polishing is also able to reduce diffuse reflection to minimal values. When an unpolished surface is magnified thousands of times, it usually looks like mountains and valleys. By repeated abrasion, those "mountains" are WORN down until they are flat or just small "hills." The process of polishing with abrasives starts with coarse ones and graduates to fine ones.Mechanical properties EditThe strength of polished products can be higher than their rougher counterparts owing to the removal of stress concentrations present in the rough surface. They take the form of corners and other defects which magnify the local stress beyond the inherent strength of the material.[2]Types EditMetalworking EditMain article: Polishing (metalworking)Other polishing processes include:BurnishingMass finishingTumble finishingVibratory finishingSodablastingWoodworking EditFrench polishingWood finishingOther EditChemical-mechanical polishing, which is used in semiconductor fabricationFabrication and testing of optical componentsFlame polishing, a type of polishing used on glass and thermoplasticsUltra-fine, abrasive paste polishing, polishing for soft or fragile work surfacesVapor polishing, a method of polishing PLASTICS to optical clarityReferences Edit Floor Scrubber, archived from the original on 2016-08-31, retrieved 2008-01-04. Zucuni, Camila Pauleski; Dapieve, Kiara Serafini; Rippe, Marília Pivetta; Pereira, Gabriel Kalil Rocha; Bottino, Marco Cícero; Valandro, Luiz Felipe (2019). "Influence of finishing/polishing on the fatigue strength, surface topography, and roughness of an yttrium-stabilized tetragonal zirconia polycrystals subjected to grinding". Journal of the Mechanical Behavior of BIOMEDICAL Materials. 93: 222–229. doi:10.1016/j.jmbbm.2019.02.013. PMID 30831358.External links Edit4 Steps of Marble PolishingFlex GuideWikimedia Commons has media related to Polishing.Look up polishing in Wiktionary, the free dictionary.Last edited 4 months ago by InternetArchiveBotRELATED ARTICLESAbrasiverough material used to shape objects by frictionSurface finishingrange of processes that alter the surface of an item to achieve a certain propertyFabrication and testing of optical componentsWikipediaContent is available under CC BY-SA 3.0 unless otherwise noted.Privacy policyTerms of UseDesktop



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