Ziemek's Inverted Spiral:

This space curve was produced using the following Maple commands:

> x:=rho*cos(2*t);
> y:=rho*sin(2*t);
> z:=sin(1/6*t);
> rho:=1/2*t^2+1;

                          x := rho cos(2 t)


                          y := rho sin(2 t)


                           z := sin(1/6 t)


                                      2
                          rho := 1/2 t  + 1

> spacecurve([x,y,z],t=0..14*Pi,numpoints=1000,
>   axes='FRAMED',thickness=2,orientation=[44,48]);