To put it simple a fractal is a form that is self-repeating on every scale (not necessarily 100% exact), in the same way that branches of a big tree actually look like smaller trees. You find it back in the forms of plants, in the structure of our lungs or in the structure of rivers and mountains.
Fractals - Hunting the hidden dimension
Mysteriously beautiful fractals are shaking up the world of mathematics and deepening our understanding of nature. You may not know it, but fractals, like the air you breathe, are all around you.
Arthur C. Clarke presents this unusual documentary on the mathematical discovery of the Mandelbrot Set (M-Set) in the visually spectacular world of fractal geometry.