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Surface roughness

Surface roughness is a term from surface physics and refers to the unevenness of the surface height. The quantitative characterisation of roughness can be determined by means of various calculation methods which take into account the specific properties of the surfaces. The surface roughness can for instance be changed by means of polishing, grinding, lapping, honing, pickling, sand blasting, bristle blasting, etching, vaporising or corrosion.