[Edu-sig] More preaching to the choir...

[kirby urner]

Here's a pointer to some related writings @ Math Forum, which I used to tell
Arthur S. (this archive) was more like "center ring" in my circus, i.e.
where math teachers meet irrespective of caring about geek subculture,
computers etc.:

http://mathforum.org/kb/thread.jspa?threadID=1845616&tstart=0

Re planets in orbit, another interesting implementation, already field
tested, multiplies complex numbers of unit radius, begetting rotation, then
scales appropriately.  Of course these orbits are merely circular, so not
that realistic, so apply some field distortion if wanting elliptic (not
something we tried).

Here's some code:
http://www.4dsolutions.net/ocn/python/orbits.py

Kirby
4D
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