nSimple as possible with
non-linear terms left in.

The Lorenz
Attractor

Edward
Lorenz – US mathematician, weather forecaster for US Army Air corps during
WWII. Made mathematical models of weather systems, noticed ‘unpredicatable
behaviour.

wrote a
set of equations for convection to explain weather pattern. He made the
equations as simple as possible, but left in non-linear terms.

Certain
non-linear systems that show apparently random motion show a strange form of
order when plotted in a suitable phase space - the motion never repeats
itself, but is confined to a fixed region of space - a strange
attractor