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.) In some materials (such as metals, glasses, black or trasparent 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.

Polishing with very fine abrasive differs physically from coarser abrasion, in that material is removed on a molecular level, so that the rate is correlated to the boiling point rather than to the melting point of the material being polished.

Other articles related to "polishing":

Bull Polishing
... Bull polishing, bulling, spit polishing or spit shining refers to a method for polishing leather products in such a way as to give an extremely high shine effect ...
Tooth Polishing - Equipment - Air-powder Polishing
... Air-powder polishing is used with a specially designed handpiece ... It delivers an air-powder slurry of warm water and sodium bicarbonate for polishing ...
Tooth Polishing - Equipment - Dental Tape
... Dental tape is used for polishing the proximal surfaces of teeth that are inaccessible to other polishing instruments ... It is also used with polishing paste ...
Tooth Polishing
... Tooth polishing is the act of smoothing the tooth surface ... The purpose of polishing is to make it difficult for plaque to accumulate on the tooth surface area ... is to use a prophy cup—a small motorized rubber cup—along with an abrasive polishing compound ...
Polishing - Types - Other
... Chemical-mechanical polishing, which is used in semiconductor fabrication Fabrication and testing of optical components Flame polishing, a type of polishing used on glass and ...

Famous quotes containing the word polishing:

    As polishing expresses the vein in marble, and grain in wood, so music brings out what of heroic lurks anywhere. The hero is the sole patron of music.
    Henry David Thoreau (1817–1862)

    The true finish is the work of time, and the use to which a thing is put. The elements are still polishing the pyramids.
    Henry David Thoreau (1817–1862)