This applet displays the Mandelbrot fractal set. Clicking on the image will zoom in. The "Options" bar allows you to change the maximum number of iterations, reset the image, or get help information. This applet illustrates how an image can be periodically updated while it is being computed.

Performance hints: the lower the maximum number of iterations, the faster the computation. Also, the black region (the Mandelbrot set itself) is the slowest to compute, so if you zoom includes a lot of it, computation will be slow.
Unfortunately, you don't have the Java language, so you can't see it work.

The source is here.

If you're looking for more information on fractals, I have reviews of some fractal books.

Ken Shirriff:
This page:
Copyright 2000 Ken Shirriff. Last updated 3/13/2001. Java and other Java-based names are trademarks of Sun Microsystems, Inc. and refer to Sun's family of Java-branded technologies. Use of this software is subject to the terms of the license agreement.