A film of soap
A film of soap with the shape of a helicoid. The helicoid is the only minimal surface which is ruled and it can be obtained by twisting a line around a perpendicular axis and, at the same time, translating the line in the direction of the axis.
© matematita
The image belongs to the sections...:
From the exhibition Matematica trasparente (From the exhibitions of matematita)
Lines and curves in 3d-space (3D geometry)
