This demo includes three graphical display windows.
The window "Curve: X(t)" displays the curve X(t) with its Frenet Frame, the osculating sphere to the
curve at X(t0), and the center of the osculating sphere, C(t0).
The windows "Curvature(t)" and "Torsion(t)" graph the curvature
and torsion, respectively, of X(t). Note the dependence of the radius
of the sphere on these two quantities.
You can change t0 and X(t) in the control window. The
includes a list of functions that you can use for X(t), along with
parameters used to define those functions.
As in previous demos there is "Show Color Spectrum" checkbox.