A few days ago i was sent this amazing illusion (thanks Karen). The illustration below appears to show green and blue spirals…..
But in fact the apparent green and blue are exactly the same colour! Don’t believe me? Well, I put the image into photoshop and changed all of the other colours to black and you get this…..
I find that utterly jaw dropping. What do you think?
Update: A few people have pointed out that you can have the creepy experience of the illusion vanishing as you zoom in in the image!
Update2: Another great version of it here.
P.S. I am not sure who created this, so if anyone can find out let me know and I will obviously credit it. the link I was sent it here. Just found out that it was created by Kitaoka (thanks Rob).
June 23, 2009 at 11:14 pm |
Wow. I couldn’t believe it at first, but after staring at it and really focussing, I can force the colours to look the same. I dunno how much of that is overcoming the illusion, and how much is deluding myself enough to cancel out the initial illusion. Science!
June 23, 2009 at 11:38 pm |
Tis true….. i just spent 30 mins going over it myself through various image programs and yep, its the same color.
Do you trust your own eyes??
June 23, 2009 at 11:40 pm |
that is amazing…!
June 24, 2009 at 12:24 am |
That’s pretty impressive, although there is a bit of a digital-image artefact which could be affecting the result. If you zoom in a lot so you can see the individual pixels, you’ll notice that the jaggy borders between colour regions have significant ‘anti-aliasing’, resulting in several pixels of an in-between colour along the borders. This is a standard digital image technique, making jaggy, pixelated lines look smoother. However, in this case, it could be accused of contributing to the perceived illusion effect.
You’ll note that at the centre of the image, the spirals get so close together that the anti-aliased blends become larger than the spirals themselves, and so most of the pixels of the ‘green’ are very much NOT the same colour as the pixels of the ‘blue’.
However, I will concede that the bands at the outside are wide enough so that there is significant amounts of same-coloured pixels. So, yeah, after all that, it seems the illusion still ‘works’, and it’s damned good.
Still, for complete rigour, I wonder if anyone can be bothered rendering a high-resolution version with no anti-aliasing.
June 24, 2009 at 12:26 am |
[...] the revelation on Richard Wiseman’s blog. Fellow Ricardo Bittencourt, good skeptic that he is, also tested the image on Photoshop and found [...]
June 24, 2009 at 1:19 am |
This reminds me of an article some 30 years ago in Sci Am about how a b/w slide photo was taken first through a red filter and then a second picture through a blue one. Then with two projectors — first one with a red filter and second one with the blue — the images were aligned. When that happened more than just the red and blue tints were visible — a whole range of color tints were “visible.”
The same thing must be going on here.
Nice illusion.
June 25, 2009 at 12:20 am
Yes it was in the early 1900’s. Prokudin-Gorskii used this technique. Here is an article about it:
http://www.loc.gov/exhibits/empire/making.html
For more Photoshop fun, you can search the Library of Congress images Web site and find more images, some have been combined, some not. If you’re clever enough, you can composite these yourself in Photoshop and see some amazing images from around 1905 that have never been published in color.
June 24, 2009 at 1:40 am |
Wow. Now I knew of this effect as an artist but I’ve never seen it demonstrated in such a dramatic way.
June 24, 2009 at 2:03 am |
Wow!
It is one of those illusions that is very hard to believe!
Thank you Richard for bringing it to my attention.
(BTW, the actual colour concerned is not ’solid’.
It is formed by dithering two pixels at an approximately 50% distribution.
One pixels is R=11, G=244, B=156.
The other is R=20, G=250, B=140.)
I, too, would be interested in viewing a better resolution version of this startling illusion.
I have done a cursory search, but have to hand back my Sherlock Google badge, as I found nothing…
June 24, 2009 at 3:37 am |
um. unless this image fools photoshop too, it doesnt work. and if you’re removing color from the blue and green to make them match, its not really an illusion since you’re tampering with the image.
June 24, 2009 at 4:20 am |
Amazing…
June 24, 2009 at 4:34 am |
I copied the picture to Photoshop, but did not use the technique described here. I simply used the eyedropper tool, and then the paintbrush. The blue & green are definitely different colors. In the outer edges of the spiral, the colors are more similar, but still distinct. Near the center of the spiral, they are not even close.
June 24, 2009 at 4:53 am
Ok, I tried using the same technique using the original image on the buzzhunt website that is linked to here. In that image, the “blue” and the “green” are indeed the same color. Some extra color information was added when the image was copied to this site.
June 24, 2009 at 5:22 am |
The original (on the other website) is a GIF image with a fixed palette of colours. The colours in the palette are black (0,0,0), orange (255,150,0), purple (255,0,255), and the green-blue (0, 255, 150) colour that appears as two colours to our eyes.
The image included on this page (colors.gif) has a different palette with many more colours. It is also smaller. I suspect that it got resized, and in the process the software that resized it performed some color mixing and interpolation. It’d probably be better to have the original picture here.
That said, this is genuinely a baffling optical illusion.
June 24, 2009 at 5:37 am
I’ve been playing with this a bit, or rather, with the original. Even if you change the green-blue colour to another one, like pure blue, or red, the illusion still works.
June 24, 2009 at 5:29 am |
For those of us who don’t want to bother tinkering with photoshop: zooming in seems to diminish the effect somewhat – probably because the bands become much wider and are thus less affected by the surrounding red and orange bands. With maximum zoom in Firefox I can see that the colors in the outer bands are indeed the same. But I can’t keep this in my mind. As soon as I zoom out again, the colors resume looking completely different.
June 24, 2009 at 6:30 am |
yes indeed, only when i zoomed in i saw they are the same color. (except for some antialiasing) you percieve them different because the surrounding color is totaly different.
June 24, 2009 at 6:32 am |
I don’t want to believe this, until I try to find RGB values in PS.
June 24, 2009 at 7:03 am |
Really cool indeed. I (kinda) remade this image. It’s not as beautiful as this one but free from artifacts.
here: http://www.cuneytozdas.com/tutorials/illusion/color_illusion.png
June 24, 2009 at 7:44 am
In this version of the picture, does everyone else see the green on the left and the blue on the right? Or are there people who see it the other way around?
June 24, 2009 at 8:06 am
Very cool – a much clearer demonstration. Good job.
June 24, 2009 at 8:48 am
When I zoom in on your image (using pixelmator) I find the ‘greener’ side switches from the left to the right at the highest zoom levels. Intriguing.
June 24, 2009 at 7:18 am |
Also, if you zoom into it, you can slowly see that the colours are the same. Spooky!
June 24, 2009 at 7:49 am |
My eyes,my eyes.!!
June 24, 2009 at 8:03 am |
Well, it is mostly the same color, but if you look at the pixels bordering with the purple, you’ll find the ‘blue’ ones more blue and ‘green’ ones more green than the base ‘blue-green’ color. And if it wasn’t for that, we wouldn’t be able to see one spiral as constantly green, and the other as constantly blue, they would change places depending on zoom or smth.
June 24, 2009 at 8:26 am |
Sweet, this example is like a colour version of the chess board in shadow illusion:
http://www.popularscience.co.uk/features/feat16.htm
I love this one as well:
http://www.johnsadowski.com/big_spanish_castle.php
There was a lovely issue of Scientific American Mind that covered illusions:
http://www.sciamdigital.com/index.cfm?fa=Products.ViewIssue&ISSUEID_CHAR=A01AFA0F-3048-8A5E-10E74BAF366CAA44
June 24, 2009 at 8:38 am |
As pointed out above, the colors are the same (0×00ff96) in the original image. It seems that the image here was changed by the wordpress image tools
June 24, 2009 at 8:41 am |
Seriously wow! Have to say I find the spiral version more impressive than the squares version. The colour “difference” doesn’t seem as great in the squares version.
June 24, 2009 at 8:51 am |
Sussed out how this works. Hope it doesn’t detract…
It’s well known that the human eye detectd differences in colour (chrominance) at a much lower resolution than light levels (luminance). Between two sharply contrasting colours, the eye always does a little bit of averaging at the edges.
If you zoom in and follow the paths, you’ll see that there are three colours of spiral: a magenta, an orange, and a blue/green. The magenta and orange colours are harmonious enough that we ignore the difference between those and concentrate on the blue/green.
Where we see blue/green as green, it is averaging with orange; where we see blue/green as blue, it is averaging with magenta. Though the blue/green is always the same colour, it is rendered on alternating paths, and so averages out with a different colour.
As mentioned above, the illusiion is being ‘helped along’ by anti-aliasing. I would imagine a high-res, non-anti-aliasing version would produce the same effect, though perhaps less prominent, provided the spirals have a small enough width.
The ‘trick’ is to see the non-blue/green parts as two different colours, magenta and orange. Because of the way our brains prioritise certain contrasts, this is not immediately apparent.
Cool effect. Thumbs up.
June 26, 2009 at 6:30 am
Good job, Joseph. I was hoping someone else was paying close enough attention to see this. Its actually just in the way that original blue green color and the two colored stripes over laying the spirals are seen by the eye.
Another interesting and sort of similar trick: wrap two copper pipes around each other, then fill one with very warm water, and the other with very cool water. After that, grab the pipes and you will react as if you just scalded your hand.
The reason why is because the hand, of course, has alot of nerves in it for sensing all kinds of things. Particularly, you have two types of nerves for sensing temperature, one set for hot, the other for cold. When something is on the uncomfortable end of hot or cold it fires both sets of nerves which causes extreeme discomfort, the way a burn feels. SO, the warm and cold pipes fire both types of nerves and you get the same feeling.
Now, if you will permit me to think a bit. Does it say something about our society when so many people relied more on technology than the obvious explanation?
June 24, 2009 at 9:21 am |
WHAT!?
I used an on-screen color picker and BAM.
June 24, 2009 at 9:43 am |
Nicely done,…colours do absorb eachother right, guess that’s why, say red, goes better (or better yet different) with some peoples skintone, then others
June 24, 2009 at 10:26 am |
This is much like the chess board shadow illusion, which I would say is equally befuddling and overpoweringly real-appearing.
June 24, 2009 at 1:01 pm
Yeah love the chess board illusion!
June 24, 2009 at 11:01 am |
Must show this to my son who is colour-blind and find out if the illusion works for him. Will report back later……
June 24, 2009 at 11:38 am |
That is seriously impressive. I had to check in Photoshop before I believed it.
@KatM: That is an excellent idea.
June 24, 2009 at 11:43 am |
I am colourblind and all I can say is, what’s all the fuss?
June 24, 2009 at 11:45 am |
Wow – that is outstanding
June 24, 2009 at 11:57 am |
Original versions (without aliasing) and credits are on this site:
http://www.psy.ritsumei.ac.jp/~akitaoka/color-e.html
June 24, 2009 at 11:57 am |
Another way to test this, as I did, is to copy it to microsoft paint and use the ‘dropper’ tool. Then draw a thick line with another tool.
Same colour. MENTAL. Great!!
June 24, 2009 at 12:11 pm |
Some of you guys have way too much time on your hands.
It’s pretty. And it’s interesting. Now do some work.
June 24, 2009 at 12:11 pm |
colour blind .. doesn’t work for me!
June 24, 2009 at 12:14 pm |
It’s funny but no matter how hard I tried I still saw two different colours. I’m was not convinced by everyone’s replies – were they really sure it’s the same colour ? I don’t have photo shop and my sceptisism has a habit of increasing in proportion to the popularity of an opinion !
Mmmm, so………..
I cut a small square approx 5mm by 5mm in a piece of paper and covered most of the image such that I could isolate the apparently different coloured spirals and that pretty much did it – I could see that without the influence of the surrounding colours the individual ‘apparent’ blues and greens now appear to be the same colour.
I then noticed that if you track a pink band across the screen it is not continuous – i.e. across one colour it is pink, then in between it is pink, however, as you reach the 2nd colour it stops and is replaced by the band of that next color. So I’m guessing part of the heart of the illusion is relative to the continuity of the spirals.
June 24, 2009 at 12:21 pm |
Just had a look at the site posted by natalie –
http://www.psy.ritsumei.ac.jp/~akitaoka/color-e.html
It’s weird but I all the blue or yellow or green ones fool me, but the red ones always look like the same red. How am I able to better distinguish the reds ?
June 24, 2009 at 12:41 pm |
Hm
… is really simple..
Where you see blue.. that is the dominant color..
..There is green with a blue outline.. but.. at first site.. is very cool
June 24, 2009 at 1:05 pm |
Some of the colour in the very middle is the same but where the colour blends it is different, that is what you see. The image, if it was in a higher resolution would not have the same illusion.
June 24, 2009 at 1:27 pm |
Yeah, I just copied it to my hard disk and opened it in Photoshop. Both the green and the blue are 59 Cyan, 0 Magenta, 71 Yellow and 0 Black.
June 24, 2009 at 1:35 pm |
i do a test like nosgoroth do : using color picker. And it has same RGB Value! I couldn’t believe it ???
June 24, 2009 at 1:43 pm |
Way cool.
But I’d love to take this discussion to another level. I’ve just always been curious about something. So if someone out there could explain to me how we ’see’ the same colours. I mean if I see the colour red and have trained myself to learn that the colour I see is ‘red’ how do I know that my ‘red’ isn’t someone else’s blue, but they call it red? Hope that made sense. My son also asked me the other night whether dogs or cats see better and the best I could do at the time was say that because they are both naturally predators both have to have very good eyesight, although because cats tend to hunt more in the dark, their eyes were better in the dark. He then went on to ask me if they saw in colour or black and white and I said we would look that one up, however it still led to the question. How would they have found that out? Animals can’t ‘tell us’ what colours (if at all) that they are seeing. So how would they test for this? I wouldn’t even know where to research this, so if someone could give me a heads up (before the little guy asks me, that would be terrific). Thanks for your patience all!
June 24, 2009 at 2:36 pm
I just searched. Haven’t looked into it more than a quick read but http://answers.yahoo.com/question/index?qid=20080421055208AAhUo4s has a thought. And it seems like it would be right.
I thought about calling a veterinarian.
June 24, 2009 at 5:21 pm
There are two ways to know what other animals can see.
First, you take apart their eyes and see what they are made of. You can also do studies to see how eyes react to different colors, shapes, etc.
Second (and easier) you train them so that they get a doggy treat when they touch a red disc, and no treat for a (say) white disc. Then do it with red and blue, and see if they can learn – if they can’t, they can’t distinguish between those colors.
Trying to understand other sensory systems, and what it must be like to have them is very weird. For humans, sight is very important, for rats, touch and smell are much more important, and come first. Cats can see better in the dark, but they are less good at distinguishing detail, and better at distinguishing movement and contrast than we are. Bees can see colors that we can’t see. Hippos rely more on smell, and that their environment changes much more slowly than ours. Horses have oval shaped eyeballs, which means that the ground is in focus at the same time as distant stuff is in focus (like wearing bifocals). And finally rabbits can see almost 360 degrees, but have almost no binocular vision. It’s all very weird.
June 25, 2009 at 7:57 pm
Read a book on dogs recently that reckoned dogs’ eyesight is not as good as ours, and that they see in shades of green, yellow and grey, though I don’t know how they came to that conclusion.
June 24, 2009 at 2:33 pm |
Cool! I put my hand in front of the screen, then looked through the slits between my fingers, and that got the illusion to disappear (so apparently, it needs a large area of the contrasting colors to work).
lessequalsmore: I’ve wondered that myself, as well. Afaik, they look at the color-sensitive cells in the eyes, and conclude what colors a given animal can see from those. Of course, that doesn’t quite tell you how the animal experiences them. Also, these experts claim that an octopus sees the world in black and white, which leads me to wonder how it knows what color to mimic with its skin…
June 24, 2009 at 2:53 pm |
[...] Hard to believe these 2 colours are the same! Spread the love No Comments » Filed in Fun [...]
June 24, 2009 at 3:08 pm |
wow thats just amzing,
who could have doen that….
visit my blog,
http://doomsdayarriving.wordpress.com
June 24, 2009 at 3:10 pm |
That is very cool. It looks green and blue also to me.
June 24, 2009 at 3:19 pm |
Original artist link: http://www.psy.ritsumei.ac.jp/~akitaoka/shikisai2005.html
Akiyoshi Kitaoka
June 24, 2009 at 3:24 pm |
Taking this to a more personable level. This illusion is the same illusion we operate under every day with people. We want to think we’re all different, but really we’re all quite the same. We see people as having different tastes, different style preferences, different likes and dislikes. But inside, really, we’re all the same. We all want what we want.
June 24, 2009 at 3:52 pm |
Tested this on my colour-blind son as promised. He could see that there were different colours involved but could not say what they were. In fact when asked to look at the original image he focused in on the centre and said he could see a pattern of stars. On second look I can see these stars too and suspect I was probably too distracted by the colours to notice them at first.
June 24, 2009 at 3:52 pm |
Thanks for sharing. It really blew my mind when I zoomed in on the image and noticed that the spirals – in fact – were the same colour.
June 24, 2009 at 4:20 pm |
haha that’s so cool! even my little brother had never seen this one, and he knows all the optical illusions…nice
June 24, 2009 at 4:25 pm |
Okay, now bring the image into Photoshop, pick the magic wand tool, turn off the Contiguous check box in settings, and click the orange color. The selection pattern makes the image “move” in a weird kind of way.
Or maybe I’m just looking too hard at it.
June 24, 2009 at 4:33 pm |
No it’s not the same color, open the Levels editor and remove any RGB color (try firts red and green and left the blue color alone) you will see theres a different amount of blue in each stripe.
June 24, 2009 at 10:24 pm
Yes, it is the same colour. Get the original image from the link above.
June 24, 2009 at 4:33 pm |
Not exactly jaw-dropping, but pretty neat.
June 24, 2009 at 4:34 pm |
[...] my evil twin Richard Wiseman comes one of the best color optical illusions I have ever seen. The original was apparently posted [...]
June 24, 2009 at 4:34 pm |
[...] my evil twin Richard Wiseman comes one of the best color optical illusions I have ever seen. The original was apparently posted [...]
June 24, 2009 at 5:24 pm |
I also didn’t believe it. But I don’t have Photoshop, so I saved it, opened it in MS Paint, saved it as 8 bit color, and then used the flood fill tool to make the pink and yellow stripes green. As you fill them in, you can see the blue and green changing and getting closer to one another.
@Joseph Smith: If that’s not jaw dropping, what is?
June 24, 2009 at 5:32 pm |
[...] Optical Illusions: check this out. [...]
June 24, 2009 at 5:34 pm |
Whew.. I was hallucinated by that.. haha.. lol.. very cool!!
June 24, 2009 at 5:59 pm |
you can use paint instead of photoshop. just cut and paste a piece of “green” and a piece of “blue” and put them side by side, it is the same color. and now i have a headache.
June 24, 2009 at 6:18 pm |
that is pretty cool
June 24, 2009 at 6:24 pm |
wow..wow…wow…yes they are truly the same! amazing!
June 24, 2009 at 6:26 pm |
Preety cool
June 24, 2009 at 6:36 pm |
What happens when you render it with crayons on white paper?
June 24, 2009 at 6:37 pm |
[...] June 24, 2009 at 11:30 am · Filed under Fun ·Tagged best, colors, optical illusion The best optical illusion I have seen all year [...]
June 24, 2009 at 6:45 pm |
[...] @morethanliving: Optical illusion. http://bit.ly/Hm1XK – brilliant Written by Doug Platts in: Twitter | Tags: fresh, [...]
June 24, 2009 at 7:03 pm |
OMG !! It is real nice
June 24, 2009 at 7:06 pm |
Oh wow! That is quite impressive. But we just found an even better one of Thomas Jefferson at the Company!
http://knowledgementco.wordpress.com/2009/06/24/the-best-optical-illusion-we-have-seen-all-ever/
June 24, 2009 at 7:26 pm |
Yup – a great illusion. All made possible by the fact that there are around 8 different colors around the blue/green (almost a teal) color that force the eye to create different contrast/interpretations.
They use this technique in advertising quite a bit. Thanks for the interesting post – Fred/Azratek
June 24, 2009 at 10:26 pm
Get the original image from the link above. It’s a GIF image with only four colours in the palette, one of which is black, and not used. There are only three colours in this picture, and that’s all that’s needed for the illusion.
June 24, 2009 at 7:29 pm |
I think that is cool. I just want peopel to know, I have an arbitation going on with one boyband, and I am actually the first boy group fan for a huge male vocal group from the 1990’s. Anyways, I think that is cool. I have started a Yahoo! group that is opposed to some of the illegal ways they do business and use illegal interior instagator agents on their websites worldwide. Anyways, that is cool. Keep it up, message me if you want to on here. Thanks. -”D”.
June 24, 2009 at 7:35 pm |
I tried Checking the colors on the broad bands as well as the more narrow ones with gimp and photoshop and the colors are different. Maybe a higher rez picture would demonstrate the illusion better but from what I see these are different colors
June 24, 2009 at 7:37 pm |
…Very funny & nice game! (^_^)
Thanks for sharing.
June 24, 2009 at 7:40 pm |
[...] a spiral version of the same illusion here, but because it’s a jpg, you can’t zoom in endlessly like the one I’ve posted. [...]
June 24, 2009 at 7:47 pm |
Interesting! The last time I was hooked to them was in my childhood.
By the way you must change your blog theme because the sidebar does not show with individual posts [which would have helped you to retain readers] with this default theme! You may check this post on my blog for suggestions on WordPRess themes with custom header.
http://vikasgupta.wordpress.com/2009/06/14/a-quick-review-of-wordpress-themes-with-the-custom-header/
June 24, 2009 at 7:52 pm |
Love it! As a painter I’m well aware of how different the same color can look in a different context and have often used it or been undermined by it. This is one of the best examples I’ve seen. Thanks for posting it. Is it copywrited. Can someone use it if necessary?
June 24, 2009 at 8:01 pm |
Not at all unexpected. if you know a bit about the eye and color perception. The phenomenon is known as “simultaneous contrast.” by setting the same color against different backgrounds the eye perceives different colors. Simultaneous contrast identified by Michel Eugène Chevreul refers to the manner in which the colors of two different objects affect each other. See
June 24, 2009 at 8:02 pm |
Opening the original .gif in GIMP, using the eyedropper tool, I get that the ‘blue’ stripes are ff00ff and the green stripes are 00ff96. Is this a psychology experiment?
June 24, 2009 at 8:13 pm |
^^^click
June 24, 2009 at 8:25 pm |
Wow, great! [/sarcasm]
June 24, 2009 at 8:31 pm |
[...] Vía Richard Wiseman Blog [...]
June 24, 2009 at 8:36 pm |
Oh my! This is pretty impressive! But we just found another optical illusion that is even BETTER! It involves Thomas Jefferson and as everybody knows that man never disappoints.
Here is our recently uncovered optical illusion extravaganza!
http://knowledgementco.wordpress.com/2009/06/24/the-best-optical-illusion-we-have-seen-all-ever/
June 24, 2009 at 8:53 pm |
[...] Looking again at the full-size image, I can just pick up a green tinge at the edge of the upper-left blue, but that’s all. Impressive. I’d be interested to see a writeup of it at Illusion Sciences. Via Richard Wiseman. [...]
June 24, 2009 at 9:19 pm |
Heh, why do we have to see the dreaded “I just reply without bothering to read previous replies first” -effect also here? To summarize the facts:
The (current) image here in Richard’s blog does have lots of antialiasing and lots of different colours. Although the basic illusion still works, the image is not very good for skeptics who actually want to see what is happening there.
However, the untouched image, which you can find for example here:
http://www.buzzhunt.co.uk/2009/06/22/green-and-blue/
…is a GIF file with an indexed colour palette of exactly 3 colours (actually 4, but one of them is not used in the picture). There are no more than that, and “green” and “blue” are the exact same colour, namely #00FF96. If you see them as different colours, it’s purely due to your eyes deceiving you, and nothing else. If your image processing program claims they are different colours, you are doing it wrong. It’s as simple as that, period, no need for anyone to claim otherwise. I have spoken.
Amazing illusion, BTW.
June 24, 2009 at 10:23 pm |
………… ups
June 24, 2009 at 10:40 pm |
Jmm, interesting, but the “blue” seems a kind of light green when you zoom…I think it’s for all the other colors. Good illusion anyway.
Sorry for bad english, if there’s any jaja.
June 24, 2009 at 10:42 pm |
Here are 5 images I made myself using the same principle:
http://img141.imageshack.us/img141/9241/illusion01.gif
http://img81.imageshack.us/img81/486/illusion02.gif
http://img93.imageshack.us/img93/76/illusion03.gif
http://img221.imageshack.us/img221/4748/illusion04.gif
http://img72.imageshack.us/img72/4671/illusion05.gif
June 24, 2009 at 10:47 pm |
Are these comments screened? I just posted a comment and it didn’t appear!
June 24, 2009 at 10:48 pm |
OK, trying again. Here are five images I made myself using the same principle:
http://img141.imageshack.us/img141/9241/illusion01.gif
http://img81.imageshack.us/img81/486/illusion02.gif
http://img93.imageshack.us/img93/76/illusion03.gif
http://img221.imageshack.us/img221/4748/illusion04.gif
http://img72.imageshack.us/img72/4671/illusion05.gif
June 24, 2009 at 10:48 pm |
OK, trying again. Here are some images I made myself using the same principle:
http://img141.imageshack.us/img141/9241/illusion01.gif
June 24, 2009 at 10:49 pm |
Hmmm. I made some images myself using the same principle, but it won’t let me post my work here!
June 24, 2009 at 11:21 pm |
If you look at it from an angle (try tilting the screen up or lowering your head), they both appear as the same color.
June 24, 2009 at 11:39 pm |
This is awesome!
Stuff like this used to happen to me when i watched the clothes on spin cycle [we had a washer you could lift the lid up on and it would still go].
You watch and blink your eyes at the same time and it all strobes…
GF
June 24, 2009 at 11:59 pm |
Wom. I guest what you see is not always what you get.
June 25, 2009 at 12:15 am |
oh my goodness! I looked at it over and over because i seriously could not see it. That’s INCREDIBLE!
June 25, 2009 at 12:24 am |
@Grand Dizzy: your versions are great. (I think comments with links must be screened)
June 25, 2009 at 12:37 am |
[...] The best optical illusion I have seen all year A few days ago i was sent this amazing illusion (thanks Karen). The illustration below appears to show green and blue [...] [...]
June 25, 2009 at 12:44 am |
Very fascinating. This is almost as good as the spinning dancer that switches directions. Did anyone see that one?
June 25, 2009 at 12:46 am |
Oh my! This is pretty impressive, indeed! But we just found another optical illusion that is even BETTER! It involves Thomas Jefferson and as everybody knows that man never disappoints.
Here is our recently uncovered optical illusion extravaganza!
http://knowledgementco.wordpress.com/2009/06/24/the-best-optical-illusion-we-have-seen-all-ever/
June 25, 2009 at 1:01 am |
come on there diffrent colours
btw if you like movies check out my blog
http://movies247.wordpress.com/
June 25, 2009 at 1:33 am |
it looks as if theres a pink background and a orange spiral running through.
whenever the “same common color” overlaps it, the appearance looks blue, and when the spiral runs over the common color, it gives an appearance of green…
June 25, 2009 at 1:49 am |
I’m not believe at first sight, then tried to check it. It’s amazing…
How can it be?
June 25, 2009 at 4:14 am |
All mind-numbing. The orange stripe becomes blue when it hits the “blue” coil. The pink stripe becomes green when it hits the “green” coil. I don’t get it.
June 25, 2009 at 4:30 am |
[...] you don’t see it in the image above, Richard Wiseman has posted an alternate version of the same optical illusion where you can better differentiate the [...]
June 25, 2009 at 5:33 am |
[...] 25, 2009 I found this amazing optical illusion on This website. The green and blue in the spiral are actually the same color. I didn’t believe it [...]
June 25, 2009 at 5:48 am |
That IS very cool. If you concentrate on the “blue” spiral, and try to ignore the pink, you can see that they are the same.
June 25, 2009 at 6:00 am |
dddd
June 25, 2009 at 6:00 am |
Great illusion for sure! I had to really just avoid looking at the pink and the lines to really see that the colors are the same.
June 25, 2009 at 6:05 am |
Brilliant. It was quite obvious how they did it but I still had to take it to photoshop and check the colour codes. Even enlarged, with the contrasting colours quite clear, my mind still sees the two different colours (though for split-seconds I can see the “green” pop out of the “blue” and vice versa).
June 25, 2009 at 6:46 am |
relly cool
June 25, 2009 at 6:47 am |
Does it works? I feel difficult to get this picture! Anyway, try it more
June 25, 2009 at 6:57 am |
[...] Adapted from: richardwiseman [...]
June 25, 2009 at 7:42 am |
[...] it on richard wiseman’s blog. Leave a Comment No Comments Yet so far Leave a comment RSS feed for comments on this post. [...]
June 25, 2009 at 7:50 am |
I find this is pretty cool….
June 25, 2009 at 7:57 am |
Illusion in blau/grün…
Echt? Das hat noch niemand bei uns gepostet? Na dann mach ich es halt
Bei Richard Wiseman und Phil Plait gab es gestern eine bemerkenswerte optische Täuschung zu sehen. Ich poste hier aber mal eine Variante davon (die von……
June 25, 2009 at 7:59 am |
They are definitely not the same colours. Zoom in, look at each band independently. Green is green. Blue is blue. Zoom in further, till you see the basic colour blocks. Again, green is green. Blue is blue. The only illusion in this is to kid people into thinking there is an illusion. There is none.
June 25, 2009 at 8:15 am |
IMPOSSIBLE IT SUCKS BYE
June 25, 2009 at 8:17 am |
WAIT I ZOOMED IN AND IT LOOKS A BIT GREENY ON THE BLUE ONE ANYWAY…………..
……….IT SUCKS BYE!!!!
June 25, 2009 at 8:25 am |
uh! ok… i love the colors..
June 25, 2009 at 8:44 am |
[...] optinių iliuzijų. Jūsų akys jus apgauna. 25 06 2009 Profesoriaus Richard Wiseman blog’e galima rasti įrašą apie vieną iš įspūdingiausių optinių iliuzijų. Apie tai rašau ir aš, [...]
June 25, 2009 at 9:13 am |
There’sa absolutely nothing geeky about this comments strand at all. Is there?
June 25, 2009 at 9:13 am |
There’s absolutely nothing geeky about this comments strand at all. Is there?
June 25, 2009 at 9:29 am |
Well the image looks more of a mix of both Blue and Green… it is really amazing.
Freedom Debt Relief
June 25, 2009 at 9:45 am |
I inverted the colors in paint and saw two different colors – so not working no?
June 25, 2009 at 9:53 am |
Amazing !
Thanks for sharing !
June 25, 2009 at 10:01 am |
[...] The best optical illusion I have seen all yearJune 23, 2009 [...]
June 25, 2009 at 10:07 am |
Pretty amazing… the color look more like a combination of Green and Blue…
June 25, 2009 at 11:03 am |
Must show this to some people who are colour-blind and find out if the illusion works for them. Will report back later……
June 25, 2009 at 11:36 am |
[...] O.K. That’s all I can show you. I am not into stealing another person’s blog. If your interest is peaked visit: Richard Wiseman blog. [...]
June 25, 2009 at 11:41 am |
When I was in art school I was taught “more red is redder than less red.” The small areas of a colour are more muddied by surrounding colours than large expanses of the colour.
This is a great example of the effect.
I have posted a link to your site from mine as I think it is so cool. I hope you get a lot of hits.
Cheers,
Rockinon
June 25, 2009 at 11:43 am |
this is very fantastic
June 25, 2009 at 12:04 pm |
here is further proof
http://img530.imageshack.us/img530/8149/colorsz.jpg
June 25, 2009 at 12:10 pm |
oops thats quite small- here is more proof- zoomed in a bit
http://img241.imageshack.us/img241/3849/colors2.jpg
June 25, 2009 at 12:12 pm |
Impressive
Raven
http://cherokeebydesign.wordpress.com/wp-admin/edit.php
June 25, 2009 at 12:42 pm |
Oh my! This is pretty impressive, indeed! But we just found another optical illusion that is even BETTER! Trust us. It involves Thomas Jefferson and as everybody knows that man never disappoints.
Here is our recently uncovered optical illusion extravaganza!
http://knowledgementco.wordpress.com/2009/06/24/the-best-optical-illusion-we-have-seen-all-ever/
June 25, 2009 at 12:51 pm |
[...] Found it on the wordpress front page, on this post. [...]
June 25, 2009 at 1:50 pm |
Couldn’t help but notice!!
Amazing!
And I’m not into these things really!
June 25, 2009 at 2:33 pm |
[...] you think you’re smart? Richard Wiseman’s recent blog post on “the best optical illusion i’ve seen all year“ reminded me of one of my favourite books and is must for all you creative types and [...]
June 25, 2009 at 2:41 pm |
Cool Post.The zoom souds intrsting thogh I am a bit lost
June 25, 2009 at 3:47 pm |
I don’t know what you mean by the “illusion vanishing” when you zoom in, but if by that you mean that it becomes clearer that the blue and green are, in fact, the same green colour, then I get ya
That’s an amazing illusion. I will share it with everyone I know.
June 25, 2009 at 4:02 pm |
[...] Bad Astronomy, Richard Wiseman, [...]
June 25, 2009 at 4:17 pm |
[...] Business as usual. Vielleicht muß man das nächste Mal genauer hinsehen. [...]
June 25, 2009 at 4:17 pm |
That is really cool……
June 25, 2009 at 4:45 pm |
That’s so cool!! I’ts like magic. I’ve seen things like that in my psychology class and I love it ^o^
June 25, 2009 at 5:55 pm |
[...] The best optical illusion I have seen all year — 5:07pm via Google [...]
June 25, 2009 at 7:29 pm |
A classical example for simultaneous color contrast.
June 25, 2009 at 7:32 pm
The Monnier-Shevell pattern shows similar color shifts.
June 25, 2009 at 7:30 pm |
Well, I copied the image on to MS paint and used invert colors option and the green took a diff color and blue took a diff one. I dont know how you say they are the same
June 25, 2009 at 7:34 pm |
Oh my! This is pretty impressive, indeed! But we just found another optical illusion that is even BETTER! Trust us. It involves Thomas Jefferson and as everybody knows that man never disappoints..
Here is our recently uncovered optical illusion extravaganza!
http://knowledgementco.wordpress.com/2009/06/24/the-best-optical-illusion-we-have-seen-all-ever/
June 25, 2009 at 7:36 pm |
No way! They are the same color? How does that work?
June 25, 2009 at 7:39 pm |
Don’t forget to check out my versions too:
http://img141.imageshack.us/img141/9241/illusion01.gif
http://img81.imageshack.us/img81/486/illusion02.gif
http://img93.imageshack.us/img93/76/illusion03.gif
http://img221.imageshack.us/img221/4748/illusion04.gif
http://img72.imageshack.us/img72/4671/illusion05.gif
June 25, 2009 at 7:49 pm |
Color is never absolute…our perception can be dramatically affected by proportion, value/intensity, lighting, surrounding colors, etc.
This particular change in perception is a form of simultaneous contrast and is intensified by the proportional relationships between the colors…this is why the illusion dissipates when you zoom into the image. I always give this assignment in my color theory courses. The other version is to make two different colors look the same (again by the choice of surrounding colors).
For those of you who are amazed by this, check out the color theory workbook exercises by Albers and Itten…
June 25, 2009 at 8:30 pm |
[...] Bild zeigt blaue und grüne Spiralen. Tatsächlich handelt es sich bei Beiden um die selbe Farbe. Hier könnt ihr ein wenig mehr darüber lesen. Eine Erklärung für diese Illusion habe ich nicht. [...]
June 25, 2009 at 8:42 pm |
This does not look like an optical illusion. It is something that might make me puke if I keep looking at it. YIKES.
June 25, 2009 at 10:29 pm |
impossible! WOOOOW! totally shocked!
June 25, 2009 at 10:34 pm |
[...] more details here and on Akiyoshi Kitaoka’s website. Share and [...]
June 25, 2009 at 11:57 pm |
This is a great illusion, as evidenced by all the people posting trying to prove it wrong or acceptance there of. Yes I have photoshop too so I had to see for myself. People, the mind creates a color shift because of the color it is next to. Its like mixing paint colors as a kid. When you have certain colors juxtaposed together, your eye (mind) blends them. Thanks for your post!
June 26, 2009 at 1:02 am |
Nonsense, using ‘Digital Color Meter’ all colors displayed are as you see them.
June 26, 2009 at 1:21 am |
Where the color looks green it is layered on top of the orangish stripes and where it looks blue it is layered on top of the pink. I assume that’s why you get the different hues from one color, or am I missing something?
June 26, 2009 at 1:27 am |
thank you for this nice post. i had to look at the screen closer, almost cross-eyed, and i’ve got a headache but still amused
June 26, 2009 at 1:55 am |
Here is the key to find out the real colors of the blue or green bands (not the pink and orange). View the image separately by rt clicking on it and choose view image. Then simply zoom in as much as you can by selecting view on the browser tool bar and then clicking zoom repetitively. Now that you have it enlarged as much as possible, look at the color bands individually near the outer most edges of the screen and you will see, that because of the way it was printed with the pink and orange, the bands looked blue and green to the eye before, when in fact they are only green and not blue at all when enlarged.
Bankruptnooption.
June 26, 2009 at 2:40 am |
[...] http://richardwiseman.wordpress.com/2009/06/23/possibly-the-best-optical-ilusion-i-have-seen-all-yea... [...]
June 26, 2009 at 2:44 am |
The pixels in the bands that appear blue are indeed the same colour as the pixels in the bands that appear green. However, I don’t find this particularly amazing. After all, using multiple small areas of colour in close proximity to each other to give the illusion of full colour is exactly what colour televisions have been doing for years…
June 26, 2009 at 2:49 am |
Only by looking very close can I get them looking a bit similar lol.
Very weird though… weird…
June 26, 2009 at 2:54 am |
I copied this to an an image viewer. I zoomed in as close as possible until all I saw were little boxes of color and I checked the numbers on the colors.
Here are the numbers for the “teal” color that “looks” blue.
131 Red
124 Green
204 blue
163 Hue
105 Sat
154 Lum
Here are the numbers for the “teal” color that “looks” green.
108 Red
197 Green
108 blue
80 Hue
104 Sat
144 Lum
Here are the numbers for the “teal” color that “looks” teal.
11 Red
244 Green
156 blue
105 Hue
219 Sat
120 Lum
What you’ll notice is that the green teal actually is green. The blue teal actually is blue. And what looks like teal on the outside edges, is actually teal. But only around the outside ledges. As you move in each spiral, the color from the orange and the purple bleeds into the teal and changes it.
I wonder what this would look like not on a computer screen, but on the computer screen the colors have been smooshed together. The little tiny pixels really are blue and green. They were supposed to be teal, but the computer smooshed the colors up and so it gives us green and blue. Which is why we see green and blue.
This isn’t an optical illusion. At most, it’s an amusing failure of the computer to maintain the integrity of an image file.
June 26, 2009 at 3:01 am |
Amazing. Thanks for sharing!
June 26, 2009 at 3:05 am |
It’s not weird. It’s just your brain trying to adjust the contrast between the colors right next to the spirals. If you notice, There are also two other colors in the image. one seems to be orange and the other purple. These two colors “cut” each one of the spiral and that is what creates the apparently two different colors. I believe the difference is made by the color cutting the spiral. If the color cutting the spiral is purple, the spiral appear to be blue, otherwise the spiral seems to be green. It’s not wired, but is amazing. Our brain can be “hacked” so easily.
June 26, 2009 at 4:10 am |
my retinas!!!!!
June 26, 2009 at 4:56 am |
c’est strange.
June 26, 2009 at 5:00 am |
Wow that is amazing, first it looks like the same color, then when you zoom in you see both a green, just where the green is sort of in reverse.
June 26, 2009 at 5:24 am |
i don’t get it. they just look different to me.
June 26, 2009 at 5:45 am |
Dude, that’s insane. I don’t see how they’re the same thing but…. woah.
June 26, 2009 at 5:54 am |
That is so crazy.
June 26, 2009 at 6:43 am |
[...] Źródło Zobacz również: [...]
June 26, 2009 at 7:09 am |
ja pierdole! ziomek ma racje. Kurwa dobra jazda
June 26, 2009 at 9:01 am |
Great pictures! wowhacks.tk wowhacks.tk
June 26, 2009 at 1:09 pm |
The illusion has to do with haptic perception. When the same color is surrounded by two different colors, relative to itself it appears to be a different color. Basic color theory! Art students at my university do some of their first projects surrounding this idea.
June 26, 2009 at 1:44 pm |
The green is actually 123, 255, 255 (RGB) and the blue is 122, 255, 255; HOWEVER, those colors are identical to the naked eye.
Great illusion!
June 26, 2009 at 1:50 pm |
[...] (optical illusion> http://richardwiseman.wordpress.com/2009/06/23/possibly-the-best-optical-ilusion-i-have-seen-all-yea...) [...]
June 26, 2009 at 1:51 pm |
that is one amazing peace of are. especialy if it can be an optical ilusion. thatnks for the post i realy enjoyed it.
P.S. : check out this Blog set up by my freinds and I, it is http://www.ngbiblog.com
June 26, 2009 at 1:58 pm |
help me i cannot see the difference
June 26, 2009 at 2:07 pm |
WHOA!!! THAT IS SO AWESOMEFUL!!!
June 26, 2009 at 2:08 pm |
[...] Really trippy optical illusion on Richard Wiseman’s [...]
June 26, 2009 at 2:10 pm |
Crock of shit.
June 26, 2009 at 2:12 pm |
Despite my homosexual tendancies, i have to agree the green and blue are the same colour!!
June 26, 2009 at 2:23 pm |
[...] 26, 2009 THIS Posted by Philip Georgiou Filed in Uncategorized Leave a Comment [...]
June 26, 2009 at 3:05 pm |
Open it in PS, go to “Enhance”>”Replace Color” and knock the “fuzziness” to about 16-20. Hit the “selection” button then click on either the green or the blue spiral.
If the colours were the same then you would expect green and blue spirals to both be selected. They are, but at different densities. The same colours are contained in each spiral, but because the density of pixels of a particular shade are different the spirals appear to be different colours. Subtle, but identifiably different.
July 9, 2009 at 8:02 am
On further investigation I take back my last comment – this appears to be an artifact of anti-aliasing.
The difference in colour is an entirely perceived phenomenon, influenced by the adjacent colours.
Fantastic optical illusion!
June 26, 2009 at 3:35 pm |
Just goes to show you that a color is only as evident as is allowed by nearby colors. Photographers should pay attention to this!
June 26, 2009 at 3:50 pm |
[...] True story! Don’t believe me? Check it out here! [...]
June 26, 2009 at 3:57 pm |
http://en.wikipedia.org/wiki/Same_color_illusion
June 26, 2009 at 4:05 pm |
[...] Simplesmente apareceu em minha frente um link para um blog com o post com o seguinte título: The best optical ilusion i have seen all year. Eu completaria, falando tecnicamente, desde de sempre. Segue [...]
June 26, 2009 at 4:20 pm |
when zoom the colors at the edge arent exactly the same for the blue part its blurry
June 26, 2009 at 5:02 pm |
Yowzer that is rather mind blowing!!
June 26, 2009 at 5:06 pm |
[...] 26, 2009 by mfearing A very interesting optical illusion. Posted on Richard Wisemans’ blog. Worth looking [...]
June 26, 2009 at 5:16 pm |
Dude, I’m color blind. Bud I do feel nausea now from staring at it.
Peace,
babbo
http://www.daddybrain.wordpress.com
June 26, 2009 at 5:18 pm |
[...] http://richardwiseman.wordpress.com/2009/06/23/possibly-the-best-optical-ilusion-i-have-seen-all-yea... [...]
June 26, 2009 at 5:24 pm |
Do you want to see the best optical illusion? Just look at your computer monitor right now. You will see a lot of colors that aren’t actually there, because the monitor only has three kind of pixels: red, green and blue. For example, when you are seeing yellow, you are actually see a bunch of green and blue pixels. Is that an optical illusion or what?
June 26, 2009 at 7:20 pm |
[...] by one Akikoshi Kitaoka and posted on his Buzzhunt blog. Then Richard Wiseman posted it on his blog. Which is where Phil Plait, the Bad Astronomy blogger in Discover Magazine, found it. Then Jamais [...]
June 26, 2009 at 9:09 pm |
Oh my! This is pretty impressive, indeed! But we just found another optical illusion that is even BETTER! Trust us.
It involves Thomas Jefferson and as everybody knows that man never disappoints..
Here is our recently uncovered optical illusion EXTRAVAGANZA!
http://knowledgementco.wordpress.com/2009/06/24/the-best-optical-illusion-we-have-seen-all-ever/
June 26, 2009 at 10:55 pm |
[...] Optische Täuschungen 24. Juni 2009 Posted by mafraka in Uncategorized. trackback http://richardwiseman.wordpress.com/2009/06/23/possibly-the-best-optical-ilusion-i-have-seen-all-yea... [...]
June 26, 2009 at 11:10 pm |
This illusion totally rocks, Dr. Wiseman! If you scroll down to the lower portion of the top image, you’ll notice that the sameness of the apparent green and blue becomes more evident, though even that requires some perceptual gymnastics. Fantastic post! Fnord.
June 26, 2009 at 11:45 pm |
Oops! Sorry, I forgot to mention that most of the upper portion of the image has to be obscured by the top of the browser window in order for this to work.
June 27, 2009 at 1:57 am |
[...] Repostado de http://richardwiseman.wordpress.com/2009/06/23/possibly-the-best-optical-ilusion-i-have-seen-all-yea... [...]
June 27, 2009 at 2:19 am |
“For example, when you are seeing yellow, you are actually see a bunch of green and blue pixels”
That’s greed and red that make yellow, actually.
June 27, 2009 at 5:04 am
Yes, my mistake. Of course green and red make yellow. But the idea remains.
June 27, 2009 at 3:29 am |
That is tricky….
June 27, 2009 at 5:35 am |
[...] the best optical illusion I have seen all year [...]
June 27, 2009 at 5:48 am |
Charming!
June 27, 2009 at 4:11 pm |
Hi,
I just want to say that I’ve looked at this a number of times but all i see is pink and green. However I look at it I can’t see the blue. I’m not colourblind but i do have an inflammatory condition of the iris (Iritis) and suffer migraines so I’m not sure if this is why the illusion does not work for me.
June 29, 2009 at 12:49 am
Livi,
It is possible to acquire colour blindness throughout life as a result of various disorders. A few can cause iritis and can also cause inflammation of the optic nerve, which could result in an acquired color vision defect. This is not something you would necessarily notice if it occurred slowly and was mild (there are various degrees of colour vision defect). I’d get my eyes checked by an optometrist or ophthalmologist to be on the safe side
Also possible is that the colour fidelity on your monitor is not correct so is not displaying the illusion properly – so don’t rely on websites for the diagnosis.
June 27, 2009 at 4:52 pm |
[...] Cool An impressive optical illusion here. [...]
June 28, 2009 at 8:55 pm |
[...] [...]
June 29, 2009 at 2:37 pm |
[...] of you may have seen this awesome optical illusion – but check out the examples of it in action by commentor Grand Dizzy – here, here, [...]
June 29, 2009 at 3:21 pm |
[...] of you may have seen this awesome optical illusion – but check out the examples of it in action by commentor Grand Dizzy – here, here, [...]
June 30, 2009 at 8:10 am |
[...] [Fuente: richardwiseman.wordpress.com] [...]
June 30, 2009 at 10:15 pm |
It is the way two different colors are used! One outlines the other in different ways… very interesting effect! Thank-you!!!
June 30, 2009 at 10:21 pm |
Oh wowzers!!!
That’s truly amazing, and jaw dropping as you say. Love it!
I’m really interested in colour and how we perceive it. And this reminds me of a little thing Derren did in one of his Trick or Treat episodes. It was the one where he taught an old lady to beat international poker players. He went to Las Vegas and did a little piece with a woman who he showed some coloured cards to, she named each colour and then he convinced her that they could infact be different colours and that it was subjective. Then she couldn’t recognise her own car because her perception of colours had been totally skewed.
Isn’t there a philosophical question about what each person sees when they’re describing the same colour. How can we ever know if we’re really seeing the same thing? Hmmm interesting…
July 1, 2009 at 12:13 pm |
Hey Gary, Jeremy, Anon & Anne,
Thanks for your feedback about how animals see etc. Gary I tried to log onto that link you left but wouldn’t you know it? Yahoo was…. “We are experiencing some unexpected downtime and are working to fix the problem. We’re sorry for any inconvenience.” So I’ll have to have another gander at that link later on. I’m now about to discuss your feedback with my son. Fascinating subject.
Cheers
July 1, 2009 at 12:22 pm |
Me again …. check out this link http://www.colormatters.com/seecolor.html it explains the whole how the eye and how animals see colour in basic terms.
Cheers
July 2, 2009 at 4:30 pm |
[...] are endless collections of self portraits. Many of them are NSFW. The same could be said for this optical illusion and belly b******e. The home of the latter is currently featuring pictures from a white trash [...]
July 5, 2009 at 6:27 am |
Cool!
July 5, 2009 at 3:24 pm |
Just open the image in paint and use the eye dropper tool…you’ll see that the 2 swirls are the same colour.
You don’t even need to use photoshop
July 6, 2009 at 11:43 pm |
Excelent
July 8, 2009 at 3:48 pm |
[...] while back Richard Wiseman posted an excellent optical illusion on his blog here. It looks like a green, blue and pink stripy spiral when in fact it is a turquoise, purple and [...]
July 12, 2009 at 10:00 pm |
[...] Richard Wiseman said this is the best new optical illusion he’s seen so far this year: Image by Prof. Kitaoka, 2009 [...]
July 15, 2009 at 6:56 am |
I totally get it the bluesh magenta colour mixes with the green while the warmer orange mixes to make the green appear more yellowy, i like
July 21, 2009 at 4:00 pm |
I feel very disturbed of finding advertising videos from THE CHURCH OF SCIENTOLOGY on this site.
Is there anything you can do to avoid that, please?
July 21, 2009 at 8:51 pm |
[...] posting this after all the cool kids already had their fun with it (ie, The Bad Astronomer, Richard Wiseman, Blog of Phyz and Buzzhunt). The trick? There is no blue in this pattern. It’s green. [...]
July 22, 2009 at 5:12 am |
[...] posting this after all the cool kids already had their fun with it (ie, The Bad Astronomer, Richard Wiseman, Blog of Phyz and Buzzhunt). The trick? There is no blue in this pattern. It’s green. The [...]
September 3, 2009 at 10:46 pm |
NO ES CIERTO, SI TOMAMOS UNA MUESTRA DE LA IMAGEN Y LA COPIAMOS EN PAIN, AL CREAR CUADROS Y LLENARLOS CON LOS COLORES DE LOS DOS TRAMOS NOS DAMOS CUENTA QUE EXISTE UNA LIGERA VARIACION EN ESTOS.
FARSANTE!!!
September 22, 2009 at 8:43 am |
very nice page…let me add my 2 cents to this blog by sharing a really good gallery of optical illusions at http://appslog.com/blog/1-blog/836-optical-illusions-what-you-see-is-not-what-you-get.html
September 25, 2009 at 10:05 pm |
[...] destacando apenas o efeito das cores é de Cuneyt Ozdas. Por fim, foi o psicólogo britânico Richard Wiseman que chamou atenção à ilusão, criada por Kitaoka há alguns anos mas circulando mais pela rede [...]