Definition:Archimedean Spiral/Archimedes' Definition

Definition
' definition of his Archimedean spiral is as follows:
 * If a straight line of which one extremity remains fixed be made to revolve at a uniform rate in a plane until it returns to the position from which it started, and if, at the same time as the straight line revolves, a point moves at a uniform rate along the straight line, starting from the fixed extremity, the point will describe a spiral in the plane.