Optical Illusion - Dynamic Target

[Richard S]

One of my retired Agency friends just sent me this. Concentrate on the black dot in the center of the image. Then move your head slowly closer to and then father from the image as you continue to concentrate on the center dot.  

* * *

Now . . . just tell us where you were on the night of . . . .  

[tracker]

Interesting; I wonder how the wizards would explain this
visual illusion or phenomenon.  

[kjtrains]

Amazing!        

[tracker]

I noticed that if you focused on either side as you move your head
the other side rotates. It is a similar feeling to being parked at a
jetway and as the jetway moves away from the aircraft there is a
very discomforting feeling that the aircraft is rolling backwards
even though the parking brake is still engaged.

[theirishguard]

now that would be exiting on a short deck  Tom