Summary

This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Use cubic bézier curves instead of polygons.

Gnuplot script

# Output to svg file:
set terminal svg size 1024 768
set output "logarithmic_spiral.svg"

# Same scale for both axes, half-size output:
set size ratio -1 0.5, 0.5

# More sample points to produce smoother picture:
set samples 480

# Axes in the center, no tick marks:
set zeroaxis
unset xtics
unset ytics
unset border
set polar

plot [-4*pi:4*pi] [-8:10] [-8:6] 1.19**t notitle

Licensing

I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.