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Odinbc
 Post subject: The Harriss spiral
PostPosted: Thu Jan 15, 2015 12:58 am  (#1) 
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An interesting read, The golden ratio has spawned a beautiful new curve: the Harriss spiral
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Inspired by the golden ratio, mathematician Edmund Harriss discovered a delightful fractal curve that no one had ever drawn before. But it’s not just a pretty picture, it contains some lovely theory – and brings the golden ratio into a family of perfect proportions...

Related:
Golden Meaning: graphic artists depict the golden ratio – in pictures
Nature, The Golden Ratio, and Fibonacci too ...

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Wallace
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 1:34 am  (#2) 
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Cool!
That new fractal might look good as a BRL image.

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oldmangrumpy
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 1:41 am  (#3) 
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Just had a look at the two references above ... my comment ... WOW! That means more to learn! :)

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lylejk
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 4:24 am  (#4) 
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Excellent; wonder how to plot this one using GIMP and/or G'MIC? :)

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Lyle

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lylejk
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 6:26 am  (#5) 
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OK; so I had some fun with this curve. lol

:)


Attachments:
harriss_spiral.png
harriss_spiral.png [ 1.56 MiB | Viewed 4104 times ]

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Rod
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 7:12 am  (#6) 
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Reminds me of Inkscapes Spiro effect. :)
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Odinbc
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 11:20 am  (#7) 
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lylejk wrote:
OK; so I had some fun with this curve. lol

:)
Nice one Lyle. :bigthup
John Golden has GeoGebra info here and an example (toggle: Points and Rectangle).
Ofnuts has a Golden Spiral filter, I wonder if it could be modified for a Harris spiral?

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Wallace
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 3:00 pm  (#8) 
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Made this with BRL.
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Odinbc
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 3:58 pm  (#9) 
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Looking good Wallace. :bigthup

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lylejk
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 4:11 pm  (#10) 
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Odinbc wrote:
lylejk wrote:
OK; so I had some fun with this curve. lol

:)
Nice one Lyle. :bigthup
John Golden has GeoGebra info here and an example (toggle: Points and Rectangle).
Ofnuts has a Golden Spiral filter, I wonder if it could be modified for a Harris spiral?


Thanks for the info Odin; hopefully the app can also run in WinXP or Win8.1. I'll check it out later; just got back from doing more then a few errands. :)

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Marcello
 Post subject: Re: The Harriss spiral
PostPosted: Thu Jan 15, 2015 4:49 pm  (#11) 
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made with inlay

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