Explore for numbers in the Mandelbrot set by entering some values (or using
the defaults), and the computer will iterate them and generate a gif
image. If you try more than a few times, you may have to hit reload once
the result comes up, as your browser thinks it already has the image in
its cache and may not update it with each new post (reload solves this).
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The defaults are set to show you the typical mapping of the Mandelbrot
set on the plane in a box with opposite corners at (-2, -1.5) and
(1.5, 1.5). The increment is the "distance" between pixels, so if you double
the pixel field, halving the field increment scales the picture
proportionately. I would recommend using a pencil and paper to keep
track of where in the field you are so you can hone in on an interesting region.

(should be small enough so that 200*X_increment is less than 2.0)

(should be small enough so that 200*Y_increment is less than 2.0)

Try your hand at seidel@mendel.berkeley.edu