Click here to see fractals in my Java applet. Click here to download fractal wallpapers in .bmp format that tile seamlessly. The generally accepted definition for fractals is that they are images that look essentially the same on all scales.
Every picture is composed of smaller pictures that resemble the whole picture.
For example, every frond on the fern looks like the whole fern. Every triangle in the Serpienski Triangle is another smaller Serpienski Triangle. Another feature associated with fractals is infinite detail. Fractals are becoming famous for their intricate beauty. Look at the leaf and compare it to a real Maple leaf.