normal line; normal vector
Mathematics term for a line or vector perpendicular to a given curve, surface, or plane. Often used in contexts like 法線ベクトル (normal vector) or 法線方向 (normal direction).
See also: 法線ベクトル (ほうせんベクトル)
Find the normal line of the curve.
The normal vector is perpendicular to the tangent plane.
reflectance normal
facet normal
vertex normal
normal vector
view plane normal
Compound of 法 (norm, law) and 線 (line), reflecting the mathematical concept of a perpendicular line. The exact historical derivation is uncertain; the term is a modern technical coinage.