This Demonstration shows a minimal version of the celebrated Möbius strip (a nonorientable surface or one-sided surface). The surface is obtained by computing a Björling curve [1], extrapolating a surface when a determined curve (in this case the circle) is known, along with a given unit normal. The associated surface shown here can be generated by means of a complex conformal transformation, simply by multiplying the minimal curve by the factor [2].

Starting with a circle , we construct a winding normal that is . Using the Björling formula with these curves, we obtain the minimal Möbius strip

.

References

[1] P. Mira, "Complete Minimal Möebius Strips in and the Björling Problem," Journal of Geometry and Physics, 56(9), 2006 pp. 1506–1515. filemon.upct.es/~pmira/pdf/MobiusCTF.pdf.