October 9, 2011: Julia in Mandelbrot | Oct. 8 | Oct. 10 | 2011 | FOTD Home |
Fractal
visionaries
and enthusiasts:
Today's image shows Julia sets of a point on the west shore line of the
large period-3 north bud of the Mandelbrot set. I say Julia
*sets* because the image is filled with countless Julia sets.
All
the tiny orangish things spotting the deep blue background are smaller
Julia sets. But don't bother checking them. They
all appear
the same as the large set filling the frame.
The image is actually a scene in a 'perturbed' Mandelbrot
set.
The perturbed sets are slices through the Julibrot in the Mandelbrot
orientation, but they have starting points other than 0,0.
(For
some reason, the type=mandel formula starts the points at the square
root of the value assigned the parameters, but IMO, the formula is so
fast that this is only a tiny, easily-worked-around flaw.)
In this particular area of this particular perturbed set, the
low-iteration stuff appears to be moth-eaten, filled with holes of
varying size, while the high-iteration stuff remains mostly hidden
beneath the low-iteration stuff, with only small patches showing
through the moth-holes. The curious thing is that the moths
who
ate the holes were very well-educated, and ate holes in the shape of
Julia sets.
To see the true Julia set of this area, reset the parameters to 0,0
and, without waiting for the image to finish, strike the space bar
twice. A skeletal Julia set will result. At this
point,
reset the logmap to 1 to see the surface Julia set or leave the logmap
at minus-4375 and do an inzoom or two to reveal another version of the
large Julia set that appears in today's FOTD lurking in the depths,
just a bit too small to be visible at the surface.
The name "Julia in Mandelbrot" accurately describes today's image.
The rating of a 6 is a bit low to fully justify the 7-1/4 minutes
required to run the parameter file.
Morning fog and afternoon sun earned mixed reviews for the weather in
the Fractal Central area today. The temperature of 79F 26C
was
about as perfect as it can get however. The fractal cats were
apparently energized by the perfection, and spent a good part of the
afternoon playing hide and seek games on the book shelves in the
hallway.
The humans, who always knew the location of one another, spent the day
dreaming of things to come, such as the next glorious FOTD, which will
be posted in under 24 hours. Until then, take care, and from
what
I read recently in a magazine, the Limerick:
A crusty
old codger named bright,
Could
travel must faster than
light.
He took off one
day,
In a relative
way,
And came
back on the previous
night.
just might be true.
Jim Muth
jimmuth@earthlink.net
START PARAMETER FILE=======================================
Julia_in_Mandlbrot { ; time=0:07:16.13-SF5 on P4-2000
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inside=255 logmap=-4375 periodicity=0
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END PARAMETER FILE=========================================