The
Archimedean spiral (also known as the
arithmetic spiral or
spiral of Archimedes) is a
spiral named after the 3rd century BC
Greek mathematician Archimedes. It is the
locus of points corresponding to the locations over time of a point moving away from a fixed point with a constant speed along a line which rotates with constant
angular velocity. Equivalently, in
polar coordinates (
r,
θ) it can be described by the equation