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| − | [[Image:SsFb.gif|A computer generated image of a leaf.|right|thumb]] | + | [[Image:Fractal.jpg|The delicate tracery of a computer-generated fractal|right|thumb|250px]] |
| − | A '''fractal''' is a design which contains in detail a shape which looks like the whole. | + | A '''fractal''' is a mathematically generated [[design]] whose details resemble the original fractal, a property known as self-similarity. A fractal is produced with mathematical equations that undergo iteration or are recursive in form. The two leading computer programs for creating fractals are UltraFractal and [[Apophysis]]. |
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| − | The fractal nature of some plants has convinced many people that God must have designed the natural world (see [[fern]]s).{{fact}} The leaves of a fern are shaped very much like the frond. | + | [[Image:SsFb.gif|A computer generated image of a [[fern]] frond, an example of fractals in nature.|left|thumb]] |
| | + | The fractal nature of some plants has convinced many people that God must have designed the natural world (see [[fern]]s). The leaves of a fern are shaped very much like the frond. Evolutionary biologists have yet to propose a satisfactory explanation for the spontaneous appearance of complex patterns in living organisms. They cannot adequately explain the evolutionary advantage of an endlessly repeating [[pattern]] and how it comes about from elementary biological or chemical processes. |
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| − | *Fractals were first named and described by Benoit Mandelbrot, a mathematician at Yale University. He calls fractals the "geometry of nature." [http://www.wsu.edu/DrUniverse/fractal.html] | + | *Fractals have been studied by mathematicians for over a century. The name was coined by [[Benoit Mandelbrot]], a mathematician at [[Yale University]]. He calls fractals the "geometry of nature." <ref>http://www.wsu.edu/DrUniverse/fractal.html</ref> |
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| | Damien Jones wrote: | | Damien Jones wrote: |
| − | *A fractal is a shape that, when you look at a small part of it, has a similar (but not necessarily identical) appearance to the full shape. Take, for example, a rocky mountain. From a distance, you can see how rocky it is; up close, the surface is very similar. Little rocks have a similar bumpy surface to big rocks and to the overall mountain. [http://www.fractalus.com/info/layman.htm] | + | *A fractal is a shape that, when you look at a small part of it, has a similar (but not necessarily identical) appearance to the full shape. Take, for example, a rocky mountain. From a distance, you can see how rocky it is; up close, the surface is very similar. Little rocks have a similar bumpy surface to big rocks and to the overall mountain.<ref>http://www.fractalus.com/info/layman.htm</ref> |
| | + | {{clear}} |
| | + | ==References== |
| | + | {{Reflist}} |
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| | ==External links== | | ==External links== |
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| | *[http://www.creativitysoftware.com/fractals-images/pages-hs/fern-fronds.htm Fractal fronds] | | *[http://www.creativitysoftware.com/fractals-images/pages-hs/fern-fronds.htm Fractal fronds] |
| | *[http://www.fractalus.com/info/layman.htm Fractals, in Layman's Terms] | | *[http://www.fractalus.com/info/layman.htm Fractals, in Layman's Terms] |
| | + | *[http://www.ultrafractal.com/ UltraFractal] |
| | + | *[http://www.apophysis.org/ Apophysis] |
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| | + | [[Category:Mathematics]] |