Optical Illusions

[Gurn Blanston]

Master, I have destroyed all my non-HIP classical era CDs.  I am ready for my next lesson.

You have indeed done well, Grasshopper. That should keep you until tomorrow, I think...

[Gurn Blanston]

Get close to the screen, constantly look at the middle of the black cross, what happens to all the pink dots?

They blink in a clockwise pattern. However, they really DO blink, since you can cover all but one and it blinks...

[Brahmsian]

Get close to the screen, constantly look at the middle of the black cross, what happens to all the pink dots?

They start to turn green, and half of them seem to disappear.

[Scarpia]

They blink in a clockwise pattern. However, they really DO blink, since you can cover all but one and it blinks...

The trick is that it looks like a green dot replaces the pink dots racing around the circle, but really the pink dot disappears and reverts to grey.

[Gurn Blanston]

The trick is that it looks like a green dot replaces the pink dots racing around the circle, but really the pink dot disappears and reverts to grey.

  It doesn't do that for me. No green seen.

[The new erato]

Feel free to post your own illusions here.

Mozart's works were written by an insignificant Italian.

[Octo_Russ]

  It doesn't do that for me. No green seen.

Look very close to the screen, gaze at the black cross for a while, what happens to the pink dots, you have to keep your eyes focused on that one point for a while, and you need to get close enough.

[Scarpia]

  It doesn't do that for me. No green seen.

The trick is to hold your field of vision steady, don't let your focus follow the disappearing dot, but hold it on the cross in the center

[Gurn Blanston]

Mozart's works were written by an insignificant Italian.

I know it's not a language issue, but I just want to clarify; that was 'Illusion' not 'delusion' 

[Gurn Blanston]

Look very close to the screen, gaze at the black cross for a while, what happens to the pink dots, you have to keep your eyes focused on that one point for a while, and you need to get close enough.

The trick is to hold your field of vision steady, don't let your focus follow the disappearing dot, but hold it on the cross in the center

OK, I see it now. Interesting phenomenon. 

[Octo_Russ]

Here's another one, are the two stars A & B different shades of blue?

[DavidW]

I'm a left-brain thinker. What does it say though that i focused on her breasts first?

[EDIT] Well, damn, i forced myself to see her go clockwise and now i can't get her to go the other way.

[EDIT2] Now i can see her go both ways at will. This test sucks.

I saw her foot first since it was moving the fastest.   Moves clockwise for me but I'm not that type of thinker, it's a silly thing isn't it?  

[Opus106]

Here's a video of a "floating cube" that has been making the rounds recently:

http://www.youtube.com/v/E9I-Onwfqpo

I got this from Richard Wiseman's blog. Do subscribe to it if you are into this sort of thing.

And, Gurn, I am familiar with the illusion you posted. If I remember correctly, I blinded someone on the board many months ago with that. (In fact, I originally saw it on Phil Plait's blog. And Phil Plait's "evil twin" is Richard Wiseman. )

[Gurn Blanston]

Here's a video of a "floating cube" that has been making the rounds recently:

http://www.youtube.com/v/E9I-Onwfqpo

I got this from Richard Wiseman's blog. Do subscribe to it if you are into this sort of thing.

And, Gurn, I am familiar with the illusion you posted. If I remember correctly, I blinded someone on the board many months ago with that. (In fact, I originally saw it on Phil Plait's blog. And Phil Plait's "evil twin" is Richard Wiseman. )

Navneeth,

Yeah, I got it from Phil Plait. Also this one that you have here, which is very cool.

[greg]

Apparently, if you deem the image to be rotating counter-clockwise, it means you are a left brain thinker.  If you see the image rotating clockwise, you are more of a right brain thinker.

Urgghh.... not this one again...

I don't think it has anything to do with left brain vs. right brain. You can will yourself to see her changing directions- you just have to relax and kind of switch your perception. It's not easy to do, but if you practice enough, it's possible.

[Philoctetes]

I know it's not a language issue, but I just want to clarify; that was 'Illusion' not 'delusion' 

Especially since they were written by his father.

[Octo_Russ]

I cut and pasted the answer, yep unbelievably they are exactly the same shade!.

[Gurn Blanston]

I cut and pasted the answer, yep unbelievably they are exactly the same shade!.

If the answer hadn't had to be 'yes' (else you wouldn't have asked ) I wouldn't have believed it. They don't appear remotely close.



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Now playing:
Franco Mezzena (Violin) - Viotti G 092 Concerto #20 in D for Violin 1st mvmt - Allegro

[karlhenning]

It didn't surprise me, but then, I've got two fine artists at home.

[Opus106]

They don't appear remotely close.

*chuckles*

Now that would have been an illusion, had they appeared so.