Jan. 15, 2013: Strangely Familiar | Jan. 14 | Jan. 16 | 2012 | FOTD Home |
Fractal visionaries and enthusiasts:
I
began the day with
a question -- when a three-dimensional left hand glove is viewed from
the fourth dimension, does it appear as a left or a right hand
glove? A few minutes pondering convinced me that the question
is
meaningless. In 4-D space both left and right hand 3-D gloves
are
the same shape. They simply lie in different
positions. Now
on to the important topic -- the fractal for today.
Today's image has something strangely familiar about it. In
fact,
this is the name I gave it. The familiarity arises because
the
image is actually a view of the familiar Seahorse Valley of the
Mandelbrot set. The unfamiliarity exists because in today's
image
the valley is viewed in the Oblate orientation, centered at the point
-0.6 on the imag(z) axis. The scenes of this particular
orientation bear no resemblance to either the Mandelbrot or the Julia
aspects of the valley.
Seahorse Valley is actually a thing with four spatial dimensions, which
means it has six mutually perpendicular planes cutting through it, each
of which can be translated in an infinity of perpendicular directions.
With such a familiar object as the source of the image, I could give it
no rating. The calculation time of 5 minutes is longer than I
would have preferred, but the new view of an old object that will
result will make the effort worthwhile. Those who do not
calculate may view the finished image on the web sites.
Thickening clouds and a temperature of 36F +2C made today less than
ideal here at Fractal Central. The forecast of ice and snow
later
tonight and tomorrow makes the future look even less ideal.
The
fractal cat passed the day in the front window, watching the world go
by and in the back window, watching the stray cats go by. The
native humans spent the day watching the work go by.
The next FOTD will be posted when the appropriate time has
passed. Until whenever, take care, and let's give our
congress a
kick in the butt. Tell them to pass a law requiring that all
our
silly disagreements be solved.
Jim Muth
jimmuth@earthlink.net
START PARAMETER FILE=======================================
Strangely_Familiar { ; time=0:05:00.00 SF5 at 2000MHZ
reset=2004 type=formula formulafile=basicer.frm
formulaname=SliceJulibrot4 passes=1 maxiter=27000
center-mag=0/0/7.466019/1/-36.75/0 params=0/0/90/0\
/-0.75/0/0/-0.6/2/0 float=y maxiter=27000
inside=0 logmap=-13 periodicity=0
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DzzGzzIzzLzzNzzQzzSzzOzzK }
frm:SliceJulibrot4 {; draws all slices of Julibrot
pix=pixel, u=real(pix), v=imag(pix),
a=pi*real(p1*0.0055555555555556),
b=pi*imag(p1*0.0055555555555556),
g=pi*real(p2*0.0055555555555556),
d=pi*imag(p2*0.0055555555555556),
ca=cos(a), cb=cos(b), sb=sin(b), cg=cos(g),
sg=sin(g), cd=cos(d), sd=sin(d),
p=u*cg*cd-v*(ca*sb*sg*cd+ca*cb*sd),
q=u*cg*sd+v*(ca*cb*cd-ca*sb*sg*sd),
r=u*sg+v*ca*sb*cg, s=v*sin(a), esc=imag(p5)+9
c=p+flip(q)+p3, z=r+flip(s)+p4:
z=z^(real(p5))+c
|z|< esc }
END PARAMETER FILE=========================================