Mandelbrot & Julia sets.

Choose a point on the Mandelbrot plot to see its Julia set. Compare the two views, then zoom in to see boundary details.

Mandelbrot

Choose the Julia parameter c.

Select a point on the left or enter its coordinates. Drag either image to pan. With an image focused, use arrow keys to pan and + or − to zoom.

Use the Seahorse Valley example to see how a small change in c reshapes the Julia set.