Numerical simulations by
Here is a submission I have made to EG-Models.De,
the electronic geometry models server in Berlin, tentatively numbered
as EG Model 2001.11.001.
Please choose the version with or without a Java applet.
If you do use the Java applet, please note that by opening
the control panel (right-click to get this off a menu)
you can use a slider to change the "polygon size", that is,
the radius of the tube drawn around the edges. You should
see that when it gets above 25, then the tube stops being embedded.