Series XXII

Number

Title

Date of Design

Dimension (cm)

Material

S22.1

Gaussian curvature of plane: circles of curvature on the same side of tangent plane 

1894

h = 18

paper

S22.2

Gaussian curvature of plane: one of the circles of curvature degenerated into a line

1894

h = 15,5

S22.3

Gaussian curvature of plane: circles of curvature on both sides of tangent plane