Surfaces48 of 113
Plücker’s conoid
Julius Plücker, 1868
A ruled surface made of horizontal lines through a vertical axis, each line at a height that rises and falls with its angle. With n = 2 it is Plücker’s cylindroid, used to study screw motions in mechanics.
(v cos u, v sin u, sin nu)
On mathcurve.com as Conoïde de Plücker
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