But the most visually interesting tend to be found for the same C values where the M-set image is busiest, i.e. points just outside the boundary. You can then toggle back, or zoom your way into the Julia set for a while and then return to the M-set. The relationship between the Mandelbrot set and Julia set can hold between other sets as well. For Mandelbrot sets, the parameter c is the complex number corresponding to the screen pixel.
Some equations have additional parameters.
The variable c is sometimes called lambda for historical reasons. Click here to load a sample image. You are visitor 5420 to this page.