Post your favorite optical illusion here
http://i694.photobucket.com/albums/v...5526610548.gif
Post your favorite optical illusion here
http://i694.photobucket.com/albums/v...5526610548.gif
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Wow. After you see it the first time, you can hold the color "in your mind" the 2nd time and slowly perceive what I guess is an after image "fading" (otherwise I tend to refocus too quickly). Rods and cones! If your pupils and time sense were severely dilated, I bet the effect would seem to take a forever
A little while ago I heard 5-10% of your rods are predictive, ie, they will fire in advance of a regularly moving object, which is part of what enables you to catch a ball and shoot pidgeons. Hopefully someone out there has a good illusion playing on that...
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
that reminds me of
http://mahboubian.googlepages.com/3d-Dinosaur.gif
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I've always liked the moon, actually... it appears bigger on the horizon, but isn't. But the thing that really gets me is that if you take a picture of a 'bigger' moon sitting on a horizon with a camera, the moon will look 'smaller' / 'normal' in the photo.
long time; /* know C? */
Unprecedented performance: Nothing ever ran this slow before.
Any sufficiently advanced bug is indistinguishable from a feature.
Real Programmers confuse Halloween and Christmas, because dec 25 == oct 31.
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ಠ_ಠ, that is a pretty cool illusion.
How about this one?
Last edited by Sebastiani; 06-20-2009 at 06:30 PM. Reason: pruned
This one's pretty good, but you have to adjust your eyes in order to see the animation.
Last edited by Sebastiani; 06-20-2009 at 06:29 PM. Reason: whoops, wrong post
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
I could not get this one to work at all for me, but maybe it is based on the fact that the center of your eye is blind*. Five minutes and I feel like a sucker. Nothing. Where is the shark???
* close one eye, hold your thumb straight in front of you, and move it very slowly back and forth horizontally but *do not follow it*, keep your eye still and relaxed. There is a very distinct point (maybe 6-8" from center toward the outside, and 1-2" wide) where your thumb "disappears" because it is in the blind area. It is not "out of focus", if you concentrate you can see part of your hand is simply not in the picture. Gone. I showed everybody I met this for a week after it was shown to me; I could just not believe I had been walking around the whole time blind in the center of my eye like everyone else
[edit, okay I think I found it -- more like a killer whale, and facing left?]
Last edited by MK27; 06-20-2009 at 07:10 PM.
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
Interesting. I've never noticed that effect before. I know that some can't see stereograms due to certain visual impairments, but quite often they just don't understand the technique. Do you wear glasses?
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
Last edited by MK27; 06-20-2009 at 07:20 PM.
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
>> I think I found it tho -- facing left and sort of waggling?
That's it. Once you latch onto it, relax your eyes, and the animation just sort of pops out at you.
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
I think this page is interesting:
The Right Brain vs Left Brain test | PerthNow
Interesting. It's definitely turning clockwise for me - but then the position of the body even indicates that. Does anyone here really see it going counter-clockwise?
EDIT: OK, I did get it going the other way now, but the natural tendency is definitely clockwise, for me.
Last edited by Sebastiani; 06-21-2009 at 12:03 AM.
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }