Before revision: Measuring a coastline 369x369px|An animation showing the increasing length of the coastline with decreasing measuring units (coarse-graining length) More than a decade after Richardson completed his work, Benoît Mandelbrot developed a new branch of mathematics, fractal geometry, to describe just such non-rectifiable complexes in nature as the infinite coastline.
After revision: Measuring a coastline 369x369px|An animation showing the increasing length of the coastline with decreasing measuring units (coarse-graining length) More than a decade after Richardson completed his work, Benoit Mandelbrot developed a new branch of mathematics, fractal geometry, to describe just such non-rectifiable complexes in nature as the infinite coastline.