quality:correction
Curvature comb

A curvature comb can be used to represent graphically the curvature of every point on a curve. If t ↦ x (t) {\displaystyle t\mapsto x(t)} is a parametrised curve its comb is defined as the parametrized curve

where κ, n {\displaystyle \kappa,n} are the curvature and normal vector and d {\displaystyle d} is a scaling factor (to be chosen as to enhance the graphical representation).