Astronomical Applications Department, U.S. Naval Observatory Curves 3 D Page 7
>
tubecurveplot( Helix( Lemniscate(1,t), 0.1, t),
0.10, t=0..10, theta=0..2*Pi, axes=box,
scaling=unconstrained, grid=[100,10] );
>
tau = simplify( tau( Helix( Lemniscate(a,t), c, t), t ), trig );
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