Example image of eyePlorer eyePlorer map for 'Surface normal': Euclidean vector Flatness Perpendicular Force Line (geometry) Orthogonality Plane (geometry) Point (geometry) Tangent space Tangent Computer graphics Phong shading Shading Vertex (geometry) Cross product Triangle Hyperplane Coordinate system Curvilinear coordinates Partial derivative Real number Gradient Implicit function Cone (geometry) Almost everywhere Lipschitz continuity Hypersurface Boundary (topology) Orientability Right-hand rule Pseudovector Surface integral Vector field 3D computer graphics Lambert's cosine law Lighting Digital compositing Render layers Optical medium Angle of incidence Ray (optics) Reflection (physics) Geometric algebra Bump mapping Center of curvature Elliptical polarization Horocycle Normal (mathematics) Null surface Numerical continuation