Relatively finely spaced surface irregularities superimposed on the waviness pattern. See also surface finish, finish, waviness
a texture that is not smooth but is irregular and uneven
the formation of small pits in a surface as a consequence of corrosion
lack of planarity of solid surface at the atomic level; a parameter that measures lack of planarity; in high quality Si wafers better than 0.1 nm. learn more.
For radar images this term describes the average vertical relief of small-scale irregularities of the terrain surface.
A heard or felt vibration generated by a rolling tire on a smooth road surface that produces the sensation of rolling on a course or irregular road surface.
The degree of irregularity of the surface of the substrate making printing difficult for most of the printing processes with the exception of screen printing.
The texture found on the surface of the wafer that is spaced very closely together.
Degree of roughness of the surface of paper; opposite to smoothness.
Units: mm (SI), mils (Imperial) The 'normal' range of RMS (root mean square) surface roughness which lies within the capacity of the process. As with mass, an 'extreme' range is also stored. Surface roughness is determined by the nature of the process: the smoothness of mold surfaces in casting and molding or the depth of cut in machining. It can usually be refined by machining, grinding and polishing.
The property of a surface that causes scattering as light reflects off of it.
Roughness or rugosity is a measurement (see surface metrology) of the small-scale variations in the height of a physical surface. This is in contrast to large-scale variations, which may be either part of the geometry of the surface or unwanted 'waviness'. Roughness is sometimes an undesirable property, as it may cause friction, wear, drag and fatigue, but it is sometimes beneficial, as it allows surfaces to trap lubricants and prevents them from welding together.