[sdiy] "spiral" waveforms

[Simon Gatrall]

>Perhaps SJ was referring to a Lorentz Attractor circuit, which does, in fact,
>draw nice spirals on a X-Y 'scope. Giant link to everything you'd ever want to
>know is:
>
>http://math.fullerton.edu/mathews/n2003/lorenz/LorenzAttractorBib/Links/LorenzAttractorBib_lnk_1.html
>
>Paul S.

Another possibility, which seems to be related:
http://staff.washington.edu/bradleyb/spiralsynth/spiral.html

A few simple pictures and a coherent explanation help a lot.
-- 
Simon Gatrall
gatrall at pacbell.net