The Optical Illusions Appreciation Thread

Yithian

Parish Watch
Staff member
Joined
Oct 29, 2002
Messages
29,620
Reaction score
35,082
Points
309
Location
East of Suez
Focus on central figure. Observe and note direction of spin. Focus on left or right figure. Observe direction of spin. Return to centre: direction of spin has changed. This is clearly mind control. Explanations? Clearly you use the guidelines on the outside figures for reference, but why is it so hard to 'overrule' one direction of spin without them?

4r8KslR.gif
 
Last edited:

Krepostnoi

Almost uniquely humourless
Joined
Jul 9, 2012
Messages
3,351
Reaction score
6,875
Points
209
Focus on central figure. Observe and note direction of spin. Focus on left or right figure. Observe direction of spin. Return to centre: direction of spin has changed. This is clearly mind control. Explanations? Clearly you use the guidelines on the outside figures for reference, but why is it so hard to 'overrule' one direction of spin without them?

View attachment 10009
This worries me somewhat, as the advertised effect only kicks in when I shift focus to the right-hand figure. Shifting to the left-hand figure has no effect on the central figure's apparent direction of rotation. What's going on?!
 

Yithian

Parish Watch
Staff member
Joined
Oct 29, 2002
Messages
29,620
Reaction score
35,082
Points
309
Location
East of Suez
This worries me somewhat, as the advertised effect only kicks in when I shift focus to the right-hand figure. Shifting to the left-hand figure has no effect on the central figure's apparent direction of rotation. What's going on?!
You are broken.

Focusing left changes the central figure's rotation to clockwise; focusing right changes it to anti-clockwise.

Try again.
 

Krepostnoi

Almost uniquely humourless
Joined
Jul 9, 2012
Messages
3,351
Reaction score
6,875
Points
209
You are broken.

Focusing left changes the central figure's rotation to clockwise; focusing right changes it to anti-clockwise.

Try again.
It was my second attempt that prompted the forlorn post. Now, when I look again, the middle figure is changing rotation at random if not at will. :crazy::truce:I think that is the universe telling me it's time to go to sleep.
 

Yithian

Parish Watch
Staff member
Joined
Oct 29, 2002
Messages
29,620
Reaction score
35,082
Points
309
Location
East of Suez
It was my second attempt that prompted the forlorn post. Now, when I look again, the middle figure is changing rotation at random if not at will. :crazy::truce:I think that is the universe telling me it's time to go to sleep.
giphy-2.gif
 

EnolaGaia

I knew the job was dangerous when I took it ...
Staff member
Joined
Jul 19, 2004
Messages
17,473
Reaction score
23,066
Points
309
Location
Out of Bounds
This is simply two circles, but reaching that conclusion has hurt my brain. ...
This particular item represents the best figurative illustration I've seen to date of the 'just out of reach' character of the migraine-related visual distortions that plagued me in my earlier years.
 

escargot

Disciple of Marduk
Joined
Aug 24, 2001
Messages
29,454
Reaction score
31,900
Points
309
Location
HM The Tower of London
Wish I had a photo of this one. Maybe I'll take one next time we're there.

Over the weekend we were driving uphill towards a t-junction. Across the junction was a tall street light, and it lined up exactly with the white lines along the centre of the road, which looked truncated because of the hill; so the lamp appeared to be standing in the middle of the road.

I gaped for a second until we neared the junction and I saw the gaps between the lines. Wonder what it looks like at night? Would you worry about avoiding it?
 
Top