Can You See the Truth in This Optical Illusion?

[tribdog]

This optical illusion is driving me nuts. I know the answer. I know the two squares are the same color, but I cannot convince my brain to believe it.
http://wavelets.mit.edu/~bharath/image-store/checkershadow-AB.jpg
there are a few neat optical illusions here http://web.mit.edu/persci/gaz/#

 

[check]

This is cooler. Print out that picture. Then cut down in such a way that you slice squares A and B into the same shape. Then move half of A beside hald of B.
It's amazing, they'll both look different but once you blint they'll both look the same shade.

 

[Ivan Seeking]

I cannot convince my brain to believe it.

Me either. I can usually see these things but that one eludes me. I had to print it out to convince myself this wasn't bogus. At first I didn't believe it!

 

[AyurvedicThug]

Check this one out: The two centers are the same shade of grey.

http://pics.bbzzdd.com/users/moomoo40moo/opt1.jpg

 

[check]

Check this one out: The two centers are the same shade of grey.

http://pics.bbzzdd.com/users/moomoo40moo/opt1.jpg

[/URL]

Your pic doesn't work. Upload it to www.imageshack.us and then try again.

 

[tribdog]

http://img137.exs.cx/img137/425/opt14tq.jpg

 

[tribdog]

my mouse pointer is a white arrow. when I drag it over the blue square the arrow turns yellow

 

[Clausius2]

This optical illusion is driving me nuts. I know the answer. I know the two squares are the same color, but I cannot convince my brain to believe it.
http://wavelets.mit.edu/~bharath/image-store/checkershadow-AB.jpg
there are a few neat optical illusions here http://web.mit.edu/persci/gaz/#

I cannot believe that. They are not equally shaded!.It is impossible!

 

[Andy]

Your cursor turns yellow? My cursor doesn't appear to change, maybe your cursors magic.

 

[tribdog]

or check out this one
http://img86.exs.cx/img86/7304/bar34gd.jpg

 

[alex caps]

or check out this one
http://img86.exs.cx/img86/7304/bar34gd.jpg

No they aren't..

 

[Clausius2]

I don't see the same color anywhere.

See this:

0
-!-
/\

she is a naked girl, can you see her? (kidding)

I mean, I don't see the same color. Do you see it really?

 

[tribdog]

lol, I was curious to see if anyone took these optical illusions for granted. So I drew one that was obviously untrue to see if anyone would just accept it.

 

[omicron]

How about this:
http://www-inst.eecs.berkeley.edu/~mlow/sosmath/effect.jpg

 

[The Bob]

Here are two.

The Bob (2004 ©)

 

[DeathKnight]

I cannot believe that. They are not equally shaded!.It is impossible!

Well, neither do I. But this pic shows it all:

http://www.grand-illusions.com/images/shades%20illusion2.jpg

By the way I really like the optic illusion found be Omicron.

http://www.michaelbach.de/ot/fcs_hollow-face/icon.gif
Sorry for the size.

 

[meteor]

More impossible rotations

 

[Smurf]

Someone explain this to me

 

[meteor]

The slope of the triangle is different. In one of the triangles is not a line

 

[Gokul43201]

Neither of the "triangles" is really a triangle. They both supposedly have a slope of 5/13 (=0.385), but since 5 and 13 are relatively prime, you can not recreate this slope with smaller integers. This tells you that the slopes on the red and blue triangles must be different from that of the overall "triangle". A quick check confirms this.

The red triangle has a slope of 3/8(=0.375) and the blue one has a slope of 2/5 (=0.4). Since one of these slopes is bigger, and the other smaller, than that of the overall "triangle", their arrangement determines the concavity or convexity of the overall shape. In this case, the uppex figure is slightly concave while the lower figure is convex on the slopy side.

The difference in areas between these slivers accounts for the missing square.

 

[Smurf]

You're so smart gokul, even bordering on know-it-allism

 

[tribdog]

You're so smart gokul, even bordering on know-it-allism

he is, and he uses his power for good. We should get him a cape.

 

[The Bob]

he is, and he uses his power for good. We should get him a cape.

With a big 'G' or a big '43201' on the back.

The Bob (2004 ©)

 

[Mk]

Well, neither do I. But this pic shows it all:

http://www.grand-illusions.com/images/shades%20illusion2.jpg

Uhh, I still don't see it, and yeah, I usually see these things without needing help.

 

[Gokul43201]

Uhh, I still don't see it, and yeah, I usually see these things without needing help.

Can you discern a change of color between the left corner of the A square and the big gray rectangle ? If you can't, they are both the same color. Likewise for the B square.

Since the gray rectangle seems to have the same color throughout, and A=G, B=G => A=B, the A and B squares have the same color.

Ooh! All this love and admiration's making my face look like Trib's ribbon (henceforth, the Tribbon).

 

[Quantum_Prodegy]

lol, I was curious to see if anyone took these optical illusions for granted. So I drew one that was obviously untrue to see if anyone would just accept it.

Uhh, I still don't see it, and yeah, I usually see these things without needing help.

see...there is nothing to "see" because its a fake...right trib?...

 

[Mk]

Can you discern a change of color between the left corner of the A square and the big gray rectangle ? If you can't, they are both the same color. Likewise for the B square.

Since the gray rectangle seems to have the same color throughout, and A=G, B=G => A=B, the A and B squares have the same color.

Yeah, I figured that out, but the gray rectangle and square B aren't the same color

 

[dextercioby]

Are my glasses dirty,or that big rectangle doesn't have a uniform color of grey??The more i look at it and the upper part of the rectangle is darker than the lower one...

Daniel.

 

[matthyaouw]

Now let's use the magic of the fill tool on paint to reveal the colour. The fill tool will change any continuous block of uniform colour into the colour i choose. After clicking in the middle of the rectangle, i get this:

This shows that parts of the square are the same colour, however I believe that the image has suffered from JPEG compression more than once as it has been altered, which will have distorted the colour somewhat. Try it if you don't believe me.

 

[DaveC426913]

To prove it absolutely (without resorting to an altered image), use your fingers to mask the adjacent squares right on your screen, and then look between them. Switch back an forth all you want.