A helicoid is a ruled surface which can be parametrized by
A curve of constant r is a helix. Fixing θ = 0 gives the x-axis; the helicoid is generated moving the x-axis up and down the z-axis, rotating the generating line at a constant angular speed a. The helicoid is, aside from the plane, the only ruled surface which is also a minimal surface.
A helicoid
- surface flux
- surface-forces apparatus
- surface gravity
- surface insulation
- surface integral
- surface(in topology)
- surface inversion
- surface leakage
- surface mount technology
- surface-mount technology
- surface(of a solid)
- surface of revolution
- surface patch
- surface process model
- surface reconstruction
- surface reflection
- surface resistance
- surface resistivity
- surface roughness
- surface runoff
- Surface science package
- surface state
- surface structure
- surface subdivision
- surface temperature