load 'plot'

do=: 13 :'({.y)+(i.{:>:y)*(--/}:y)%{:y'

t=:do 0 10 1000

sin=:1&o.

cos=:2&o.

'pensize 2;aspect 1'plot (sin t);cos t NB. TWO poolar circles 

'pensize 2;aspect 1'plot t;(sin t);cos t NB. Slinky from two circles over
time

 

 

Cliff, I'm trying to create a Fibonacci spiral in 2-D.  I wonder how it
might be extended to 3-D and appear like an actual seashell.

 

Somehow it might be based upon the slinky created above

 

Thanks for you article.  Linda

 

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