The logarithmic spiral is plotted with the origin in red. It can be expressed in polar coordinates as or parametrically as:[more]
Each small black point represents the spiral's point for a different angle . Specifically, 80 black points are plotted for each completed round (). The big black point represents the "initial point" corresponding to . The big blue point highlights the point for the specific angle selected with the control.
Select "fixed axes" to restrict the range of in the plot to . Without "fixed axes", the same spiral can be seen resized; the unit line segment along the axis shows the scale.[less]
Wolfram Demonstrations Project
Published: March 7 2011