title: Roughness
text: # Roughness
  
  Roughness may refer to:
  
  * Surface roughness, the roughness of a surface
  * Roughness length, roughness as applied in meteorology
  * International Roughness Index, the roughness of a road
  * Hydraulic roughness, the roughness of land and waterway features
  * Roughness (psychophysics) in psychoacoustics refers to the level of dissonance
  * The 'roughness' of a line or surface, measured numerically by the Hausdorff dimension
  * Roughness/resel, the resel/roughness of an image/volume
  * Unnecessary roughness, a type of foul in gridiron football
  