158 4 Surfaces of Gaussian curvature zero
Fig. 4.5. Gauss flat surface (k = 0) of type conus. Here: cone wrapping the sphere, a special parallel circle is
the line-of-contact: “developable”.
Fig. 4.6. Tangent developable of a helix (“developable helix”).
Fig. 4.5. Gauss flat surface (k = 0) of type conus. Here: cone wrapping the sphere, a special parallel circle is
the line-of-contact: “developable”.
Fig. 4.6. Tangent developable of a helix (“developable helix”).