Details: This poster shows a star shape expanding outwards in various colors.
In colloquial usage, a fractal is a rough or fragmented geometric shape that can be subdivided in parts, each of which is (at least approximately) a reduced-size copy of the whole. Because they appear similar at all levels of magnification, fractals are often considered to be infinitely complex. Approximate fractals are easily found in nature. These objects display self-similar structure over an extended, but finite, scale range.