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#21
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{SI] Shoot-In - Fractal Comments
"Mardon" wrote in message . 130... "William Graham" wrote: & plums, grapes, & several other berries, and my wife bought a blue (or was it purple) cauliflower last Saturday...... Blue potatoes are common here. Many Newfoundlanders prefer them. They are not a deep blue but still, definately blue. Well, we have some blue potato chips here, but I always assumed they were created with food coloring....... |
#22
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{SI] Shoot-In - Fractal Comments
Desdinova wrote:
Alan Browne: I don't think I've seen a fern that colour or at least stay that colour for long. It's almost like tarnished gold leaf, if there is such a thing. The time of day shot (late afternoon) may have contributed some red to the yellow as well. But, that is pretty much the color of ferns and other leaves here in the fall. Except of course the maples which are stunning reds, oranges, yellows and purple accents. Cheers, Alan |
#23
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{SI] Shoot-In - Fractal Comments
Mardon wrote in
. 130: One early October Tuesday evening in Newfoundland, Mardon put down his paintbrush to check the r.p.e.35 newsgroup. (His wife kept painting.) Lo and behold, the SI fractal submissions were on display in their full glory, even before the submission deadline arrived. Talk about efficiency. There's no flies on our Jim, as the saying goes. I wonder if Al is impressed or just glad that the job isn't his anymore. I think he's trying to show me up. But hey, I'm glad he was willing to take it over, and as can be seen from how long it took me to get to this reply, I'm not in any better shape timewise ;-) Thanks for taking the time to critique! Maybe one day I'll be so motivated again... "Natural Fractals" Hummm --- I own a text on Chaos Theory. I've installed Quat and Fractint and have used them on my PC to generate my own fractal images. I've even installed an image of Henrik Engstrom's quaternion Mandelbrot set circa 1992 as my PC wallpaper. All that said, I still have no idea which of the SI submissions is really a natural fractal and which isn't. Unlike image plots of fractal equations, I'm inclined to think that natural fractals exist only in the mind of the beholder. So does beauty, and here's my opinion of both: snip Al Denelsbeck http://www.pbase.com/shootin/image/68336564 How'd you do that? The lily pad looks like it's under the surface of the water but the droplets wouldn't float on water would they? It seems logical that the droplets must be sitting on the leaf but it doesn't look that way to my eye. Intriguing! The veins are no doubt fractal in nature, so do deduction there. To paraphrase our friend Bret, too bad "Elitechrome 100 Hates Lily Pads". "Elitechrome 100 LOVES those bubbles though." Too much washed out green for my taste. The pads are indeed above the water, but these were fresh ones and fairly translucent, so I think that and the short depth of field is what provided the illusion. I don't quite see it myself, but I was there. I think what I liked about this was the anachronistic aspect of it - the pad, though veined, is still round, and the water drop can't get a whole lot more unfractal. Break it up and you see it really is made of smaller bits the same shape though ;-) Mardon http://www.pbase.com/shootin/image/68338439 I thought about cooking a DVD in our microwave and repeating the fractal image from Wikipedia (http://en.wikipedia.org/wiki/Image:Microwaved-DVD.jpg). In the end, I'm not sure if it was my reluctance to 'steal' the idea from Wiki or the fear of having my wife catch me putting a metal DVD in the microwave that ultimately dissuaded me. A few years back friends and I put a standard CD in the microwave. About three seconds and there was a minimal flash of light from the plastic, and we took a look. The resultant pattern in the foil was very branched, clearly an electrical discharge pattern, not at all like Wiki's demo. Player didn't like it either ;-) - Al. -- To reply, insert dash in address to match domain below Online photo gallery at www.wading-in.net |
#24
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{SI] Shoot-In - Fractal Comments
"Mardon" wrote in message . 130... One early October Tuesday evening in Newfoundland, Mardon put down his paintbrush to check the r.p.e.35 newsgroup. (His wife kept painting.) Lo and behold, the SI fractal submissions were on display in their full glory, even before the submission deadline arrived. Talk about efficiency. There's no flies on our Jim, as the saying goes. I wonder if Al is impressed or just glad that the job isn't his anymore. "Natural Fractals" Hummm --- I own a text on Chaos Theory. I've installed Quat and Fractint and have used them on my PC to generate my own fractal images. I've even installed an image of Henrik Engstrom's quaternion Mandelbrot set circa 1992 as my PC wallpaper. All that said, I still have no idea which of the SI submissions is really a natural fractal and which isn't. Unlike image plots of fractal equations, I'm inclined to think that natural fractals exist only in the mind of the beholder. So does beauty, and here's my opinion of both: Bowser http://www.pbase.com/shootin/image/68336559 Nice image! Are the barnacles the natural fractals or the rust? I suspect the rust is really more fractal in nature than the barnacles but who cares. No deduction because one of them must be fractal in nature. The orange and white complements each other well and I like the composition, with mostly white to the upper left and mostly rust to the lower right. Thanks for the comments! Answer: both are fractal and blend into each other. I liked the colors, but had a difficult time getting it all into focus. The bouy is convex, so the corners bowed away from the center, and I was failry close so the corners are still a little OOF. I didn't want to screw up my own mandate... |
#25
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{SI] Shoot-In - Fractal Comments
Nicholas O. Lindan wrote:
"JimKramer" wrote http://www.pbase.com/shootin/image/68336571 It is the egg case for a Green Lynx Spider Legs of which ar in the the background. It has much the same form as the sprout from a potato http://www.inspection.gc.ca/english/.../potato21d.jpg http://research.cip.cgiar.org/potato...jpg_medium.jpg That looks a bit like roman cauliflower http://www.notthisorthat.com/sblog/u...auliflower.jpg That looks a bit like a Julia set [sort of a Mandelbrot set turned inside out] http://www.fractalartcontests.com/1998/images/258.gif So what do all these have to do with the equation for the Mandelbrot set: 2 Z = Z + Z n+1 n n Where Z is a complex number: x + yi, where i is the square root of -1 The Mandelbrot set is but 1 algorithm that generates fractals. In fact Mandelbrot didn't even come up with that equation, it was a French (IIRC) mathematician in the late 1800's or early 1900's. As it is difficult to impossible to produce fractal imagery (despite the absolute simplicity of the equation) in any detail without a computer, the whole notion was lost until Benoit Mandelbrot took another stab at it. Occasionally in aerial photography you will see river deltas or gorges that are astonishingly similar to the Mandlebrot set. Ferns are not Mandelbrot like, they follow another, much simpler, fractal equation (that I don't recall offhand) but that I programmed on an HP-9845 back in the 80's and on a PC later. (Much easier on the brillant HP-9845 which was WAY ahead of its time at the time with a FORTRAN-like BASIC...) Cheers, Alan -- -- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm -- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm -- [SI] gallery & rulz: http://www.pbase.com/shootin -- e-meil: Remove FreeLunch. |
#26
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{SI] Shoot-In - Fractal Comments
Alan Browne wrote:
*snip* I programmed on an HP-9845 back in the 80's and on a PC later. (Much easier on the brillant HP-9845 which was WAY ahead of its time at the time with a FORTRAN-like BASIC...) Cheers, Alan A really neat programming language I used on my Commodore 64 was "Logo". It excelled at plotting equations. I guess Logo is now just one of many dead programming languages. |
#27
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{SI] Shoot-In - Fractal Comments
"Mardon" wrote in message . 130... Alan Browne wrote: *snip* I programmed on an HP-9845 back in the 80's and on a PC later. (Much easier on the brillant HP-9845 which was WAY ahead of its time at the time with a FORTRAN-like BASIC...) Cheers, Alan A really neat programming language I used on my Commodore 64 was "Logo". It excelled at plotting equations. I guess Logo is now just one of many dead programming languages. Yup. - And this is why I, (with a degree in math) did not become a programmer. I have no problem learning a good language and using it. But learning a new one every year for the rest of my life? - NO THANKS!! |
#28
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{SI] Shoot-In - Fractal Comments
Logo in many ways lisp without parenthesis was marketed as a kids
language and is actually a very serious language for many applications. As far as I know LCSI who wrote many of the LOGO's used in computers a decade ago is still creating software. w.. Mardon wrote: Alan Browne wrote: *snip* I programmed on an HP-9845 back in the 80's and on a PC later. (Much easier on the brillant HP-9845 which was WAY ahead of its time at the time with a FORTRAN-like BASIC...) Cheers, Alan A really neat programming language I used on my Commodore 64 was "Logo". It excelled at plotting equations. I guess Logo is now just one of many dead programming languages. |
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