This is an amazing optical illusion

[Jim H - VA USA]

Amazing picture..

 

[Jim H - VA USA]

 

[Jim H - VA USA]

 

[Jim H - VA USA]

Look at the woman on the left. Then look at the center woman. She will be moving clockwise.

Look at the woman on the right. Then look at the center woman. She will be moving counter-clockwise.

I kid you not. This is amazing stuff.

 

[Jim H - VA USA]

 

[Jim H - VA USA]

 

[Jim H - VA USA]

Another great stereogram...

Cross you eyes slightly to make six die on every row instead of five...

After you see the 3D image, move your head to the left and right, while keeping the 3D image in focus...

 

[Jim H - VA USA]

Check out this guy walking away in the snow...

It's actually a picture of a dog walking toward the camera.

 

[Jim H - VA USA]

You can make this dragon by printing the PDF below....

http://thinkfun.com/wp-content/uploads/2014/10/Dragon-Illusion-BBC.pdf

 

[Jim H - VA USA]

If you scroll this picture or look around it, it appears to move.

For the next one. Look at the dot. Only the dot. After the timer, the image will turn to greyscale, but you will see color.

 

[Jim H - VA USA]

More "Reverse Phi" optical illusion giving the impression of motion. You can put your mouse pointer over any spot and confirm for yourself that the only thing moving is the coloration....

How it works:

 

[Jim H - VA USA]

This one is neat. The black hole seems to expand. It's because as you stare at the image, your pupil dilates....

 

[jwoodie]

Explain it if you can.

It may be the result of the 1/6 second delay between optical input and optical recognition, for which our minds fill in the gaps (like with motion pictures) and predict real-time images.

 

[james bond]

This one is AMAZING. It tests if you're left brained (counter clockwise) or right brained (clockwise). I see her spinning clockwise at first.

The Truth About the Spinning Dancer

The false claims of a dancing silhouette.

well.blogs.nytimes.com

 

[Jim H - VA USA]

View attachment 653250

This one is AMAZING. It tests if you're left brained (counter clockwise) or right brained (clockwise). I see her spinning clockwise at first.

The Truth About the Spinning Dancer

The false claims of a dancing silhouette.

well.blogs.nytimes.com

I agree.

See post 24 for another version. Sometimes it is difficult to make your brain have her rotate in the other direction, and the version in Post 24 really helps with that.

 

[Jim H - VA USA]

It may be the result of the 1/6 second delay between optical input and optical recognition, for which our minds fill in the gaps (like with motion pictures) and predict real-time images.

Something like that might be going on here...

This is two flashing images, but it kind of looks like the buildings keep getting closer - they never seem to move backwards...

 

[Feeding Crows]

Nothing is actually moving except the stick figure running in place.

The color flashes all-at-once; you can confirm by pausing it (windows key - shift - s on a PC).

Yet motion is perceived upwards, to the right, and downwards simultaneously.

Explain it if you can. All I can think of is that that the tiny outlines matter a lot, and we are wired to see movement like that, so we do.

https://i.redd.it/zsuormkf1z061.gif

 

[Faun]

Nothing is actually moving except the stick figure running in place.

The color flashes all-at-once; you can confirm by pausing it (windows key - shift - s on a PC).

Yet motion is perceived upwards, to the right, and downwards simultaneously.

Explain it if you can. All I can think of is that that the tiny outlines matter a lot, and we are wired to see movement like that, so we do.

https://i.redd.it/zsuormkf1z061.gif

I suspect it might have something to do with different colors traveling at different speeds.

 

[Jim H - VA USA]

I suspect it might have something to do with different colors traveling at different speeds.

Yeah, something like that, but the colors change at the same speeds.

Certainly has to do with the color changes which happen all at once.
The frames look like this...

The key is in the fine detail of the border contrast.

This guy is "moving" upwards..

This guy is "moving" downwards...

It's pretty obvious what is going on when it is paused and zoomed.

It's the "reverse phi" effect. If a dark point become light, we perceive motion away from the point.

 

[Faun]

Yeah, something like that, but the colors change at the same speeds.

Certainly has to do with the color changes which happen all at once.
The frames look like this...

View attachment 653432View attachment 653433

The key is in the fine detail of the border contrast.

This guy is "moving" upwards..

View attachment 653450 View attachment 653460

This guy is "moving" downwards...

View attachment 653453 View attachment 653461

It's pretty obvious what is going on when it is paused and zoomed.

It's the "reverse phi" effect. If a dark point become light, we perceive motion away from the point.

It's the speed in which your brain translates the change in color.