The Ballerina
Quick: which way is she spinning?

You can train your brain to see it either way (if you want to make her spin the opposite way, try focusing just on the bottom foot and concentrate).
I’m fascinated by the artist’s decision to render the woman’s nipples so carefully.
November 21st, 2007 at 7:39 am
Slihouette aside, if you look at the reflection at the bottom, it is clear the motion is clockwise (looking from the top of her head): The reflected foot moves strictly from right to left when the leg is extended “towards” the viewer.
At least it’s not a hoax as I suspected - for it to be such, the reflection would have to alternate between right-to-left and left-to-right motion. Now I’ve proven it’s not a hoax and I can no longer see her change direction. Nice going, brain…
November 22nd, 2007 at 1:21 am
WOW! WOW! WOW! I have seen this thing a few times before, but just now, when i concentrated on her foot, she turned and spun in the opposite direction. WOW! I was shocked when it happened! Thanks a lot, David!
November 22nd, 2007 at 5:27 am
The reason it changes direction when you concentrate on it is because… wait for it… it changes direction every now and then. You are just too buisy concentrating to see it happen.
November 22nd, 2007 at 7:52 am
No, I have had two people staring at the same screen seeing it change at different times. It is the “concentrating” that is the key. Clockwise indicates right brain, which is a sensing or perceiving state. The minute you start to analyse or actually “think” about something, we switch to the left brain, hence she changes direction.
November 22nd, 2007 at 4:32 pm
I don’t know about that brain thing, but I do know that since it’s a silhouette, no light sources indicate, for example, if the bottom foot is spinning towards the viewer or away from him at a certain point, so you can see it as either one.
November 23rd, 2007 at 3:17 am
It doesn’t change every now and then, it simply uses an absolute reflection for each section of the body. One thing I noticed, I was listening to music when I first started it, and it seemed much more difficult to reflect. Music affected me by forcing it’s reflection clockwise.
November 23rd, 2007 at 4:27 pm
Tested it with friends, we saw it going different ways at the same time.
Wierd brain shit
November 25th, 2007 at 6:50 pm
Thank you Box.
November 26th, 2007 at 4:28 am
I must be looking at it wrong, I can only see it going clockwise, I have no idea how it is supposed to look otherwise…
November 27th, 2007 at 3:22 pm
Think about your first kiss. Or what you think it’ll be like…
December 1st, 2007 at 9:38 am
No matter how much I stare at this, her nipples always rotate clockwise. I can’t see it any other way.
December 26th, 2007 at 2:01 pm
When looking downward on her she is spinning counterclockwise, quite clearly indicated by the reflection. Remember-the angle of incidence is equal to the angle of reflection (refraction). The reflection of her foot is below the picture edge when she is facing us. I too think the nipples are over-done.
December 26th, 2007 at 2:16 pm
But I must confess…she does spin both ways. you can change it at will. If you suppose that the foot remains in a plane parrallel to the floor you willsee her spinning clock-wise, but if you suspect the angle incidence thing I stated above you will see her as spinning counter-clockwise. The physics don’t jibe, that’s why we can shift it either way. Te other thing that bugs me is her axis is not have a viable center of gravity that would allow her to spin more than once or twice without falling.
October 22nd, 2008 at 7:29 pm
I’m right-brain clockwise, but I can spin her either way at will.
Concentrate, blink for 2 seconds, actually move you head and eyes in the direction of spin and voila! Complete control.