An Archimedes spiral displaying 'pi' with 50 digits -base 10- [Une spirale d'Archimède montrant 'pi' avec 50 décimales -base 10-].
rho = srqt(N) theta = 2.pi.sqrt(N)The radius of the N-th disk is an increasing function of the N-th digit of 'pi' as well as the height of the peaks for the tridimensional visualizations.