Surface of Constant Slope
Surface of Constant Slope is a ruled surface, given by a parametrisation, immersed.
Open Surface of Constant Slope in the interactive viewer →
aperiodic def-parametric immersed implemented ruled
Formula
Properties
- Family
- ruled
- Given by
- a parametrisation
- Curvature
- no condition imposed
- Periodicity
- not periodic
- Ends
- 0
- Embedding
- immersed
- Fidelity
- exact
- Exactness
- elementary
Definition
Monge's sandpile at the operator defaults: rise from the 3-lobed base curve r = 1 + 0.6 cos 3u along its outward normal at 45 degrees (slope 1), ruling length 1
Sources
Chart reproduced numerically against the shipped implementation: fwd max 0.45 of tol, 0.0% of oracle beyond tol (tol floor 2.5 x 0.08839).
- G. W. Hart, "Curved, yet Straight: Stick Hyperboloids," Bridges 2023 Conference Proceedings, pp. 251-258.
- E. Jannasch & J. Macnab, "The Compound Helical Cone as Kinematic Trace," Bridges 2023 Conference Proceedings, pp. 15-22.
- F. A. Farris, "Spiral Ruled Surfaces," Bridges 2022 Conference
- Proceedings, pp. 289-292; and F. A. Farris, "Creating Symmetry" (Princeton Univ. Press, 2015).
- Antoni Gaudi (1852-1926), the ruled roof of the Sagrada Familia escoles; Hector Guimard (1867-1942). Both parametrizations, and the milk carton's, from R. Ferreol, "Encyclopedie des formes mathematiques remarquables" (mathcurve.com), chapters "surface de Gaudi", "surface de Guimard" and "berlingot".
- Milk carton: H. M. Cundy & A. P. Rollett, "Mathematical Models" (1951), 185-188.