3D-print, 3D-geometri & 3D-arkitektur
Modellering af spiraler (helix og heliocoide):
Inspiration fra artikel:
"Spirals on surfaces of revolution" af Cristian Lazureanu:
http://elib.mi.sanu.ac.rs/files/journals/vm/57/vmn57p2-10.pdf 
Artikel om helix-spiraler:
"Geometry of the toroidal N-helix: optimal-packing and zero-twist" af Kasper Olsen (KU) and Jakob Bohr (DTU):
https://iopscience.iop.org/article/10.1088/1367-2630/14/2/023063/pdf 