RECTIFICATION

'Rectification' has the following technical meanings.

★ Astrology - see Natal chart#Rectification

★ Chemistry - see Rectification (chemistry)

★ Chinese history - see Cheng Feng

★ Geometry - see Rectification (geometry) - truncating a polytope by marking the midpoints of all its edges, and cutting off its vertices at those points.

★ Electricity - see rectifier

★ Image rectification: see Image rectification - adjustment of images to simplify stereo vision or to map images to a map coordinate system (GIS).

★ Law - see Rectification (law)

★ Mathematics - finding the length of an arc of a curve. See also rectifiable curve, rectifiable set