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Stupid Eye Tricks (NSF56K or headaches)

13

Posts

  • marty_0001marty_0001 I am a file and you put documents in meRegistered User regular
    edited October 2007
    I stared at that thing for ages, read all your posts, but couldn't see how it could possibly go clockwise. Thought perhaps you were all insane.

    Then, brain implosion.

    marty_0001 on
  • WidepathWidepath Registered User regular
    edited October 2007
    FAQ wrote: »
    Oh i got another good one, man i want one of these

    http://www.youtube.com/watch?v=zIZcl8q0u4Q

    I thought it was some kind of computer trickery at first so here's another version with a top quality soundtrack (watch the top one first though, the second one is just for you despicable cynics out there)

    http://www.youtube.com/watch?v=UwyIM2koL3g

    You want it?
    Well, Get some tape and shit.

    http://www.grand-illusions.com/opticalillusions/three_dragons/

    Widepath on
  • monkeyfeet63monkeyfeet63 Registered User regular
    edited October 2007
    Guys I first saw it going clockwise.

    Then I watched the shadow for a while and then saw it clearly go counter-clockwise.

    Now I can't see it clockwise again.

    I miss it.

    monkeyfeet63 on
    Ducktalesavlong.jpg
  • MKRMKR Registered User regular
    edited October 2007
    I can only see it as counterclockwise if I convince myself it's inverted, but it doesn't work if I try to rationalize it. I don't actually see it going backwards either way.

    MKR on
  • ShujaaShujaa Registered User regular
    edited October 2007
    It's easier to see the shadow as moving in the direction you want. If I cover the top half and only see the shadow and legs, I can even see the legs going one way and their shadow going the other (weird). Lining them up in my mind lets me change the direction while watching it. It also helps to look at the bottom of the foot and its shadow if you can't line them up, because they are so close together.

    Shujaa on
  • bentbent Registered User regular
    edited October 2007
    okay the spinny girl was going clockwise for me, then I looked away for a bit and came back and she was going counter-clockwise

    does the .gif just spin both ways to fuck around with me or something

    bent on
    sig1.png
  • CraigopogoCraigopogo Registered User regular
    edited October 2007
    I just got the spinning girl to go counter clockwise. What... what the fuck.

    Craigopogo on
  • KnobKnob TURN THE BEAT BACK InternetModerator Mod Emeritus
    edited October 2007
    you ever watch mst3k

    you ever tricked your eyes into seeing crow sitting facing you instead of the screen

    same principle

    its a flat silhoutte, so there's no information on what the near and far points of the image are, and if you reverse the near and far points in your mind, the image rotates in the opposite direction

    Knob on
  • trentsteeltrentsteel Registered User regular
    edited October 2007
    The key to that thing is watching the foot. Just keep imagining it as pointing out toward you instead of away whenever it gets to the middle.

    I can switch back and forth like that.

    trentsteel on
    http://www.botsnthings.com/
    I made a TD for iphone and windows phone!

  • HunterHunter Chemist with a heart of Au Registered User regular
    edited October 2007
    I saw it clockwise until I focused on the shadow, now it's counterclockwise.

    I can't get it to switch back though. My head is going to asplode!

    EDIT: No, the toe point thing Knob talked about works. If you focus on that point and say "the toe is pointing towards me or away from me" it switches from clockwise to counter.

    Hunter on
  • TechnicalityTechnicality Registered User regular
    edited October 2007
    Top Christmas timewasting tip:
    You can make the top of angel chimes do the same thing as the spinning girl. Its even more surreal when its a real object and you convince your brain its spinning the other way, then glance down at the rest of the chimes and the damn thing switches direction.

    Technicality on
    handt.jpg tor.jpg

  • JC of DIJC of DI I think we're fucked up. I know I am.Registered User regular
    edited October 2007
    Holy fuck that spinning girl image is ridiculous. My mind could not grasp the concept that she's spinning counter-clockwise for almost an hour now. I'd been telling myself that the leg is opposite of what I think, her toes are pointing away when my mind sees towards, etc. Finally I used one hand to cover up everything but the shadow, then spun my finger (with the toes) counter-clockwise, slowly lifting up my hand until her own foot was doing it, then just removed my hand completely. I saw it for a split second and my eyes widened...she was going clockwise again the moment I lost focus but god damn - I thought I was going insane for not being able to see it earlier.

    JC of DI on
    PJWczLu.png
  • Mr. Henry BemisMr. Henry Bemis God is love Registered User regular
    edited October 2007
    why won't this switch

    i can sort of see how the toes look right both ways but i don't see how you get over her leg blatantly spinning clockwise

    Mr. Henry Bemis on
    Nothing is true; Everything is permitted
  • M.D.M.D. and then what happens? Registered User regular
    edited October 2007
    I like that Julian Beever fellow who does the 3d paintings on sidewalks.

    M.D. on
  • SilmarilSilmaril Mr Ha Ha Hapless. Registered User regular
    edited October 2007
    why won't this switch

    i can sort of see how the toes look right both ways but i don't see how you get over her leg blatantly spinning clockwise


    Look closer.

    Silmaril on
    t9migZb.jpg
  • HunterHunter Chemist with a heart of Au Registered User regular
    edited October 2007
    Man, once you can make it switch back and forth, it can really fuck with your head.

    Also, if I stop looking at it for a while and then go back to it, it always starts as clockwise.

    Hunter on
  • misbehavinmisbehavin Registered User regular
    edited October 2007
    When I saw both spins on the silhouette, my brain did this little... twitch.. like it suddenly questioned everything it's ever seen.

    misbehavin on
  • MKRMKR Registered User regular
    edited October 2007
    The hell...

    I was screwing around in GIMP to find some way to invert all the layers and I had the image on page one in the background, and it started going counterclockwise.

    And now it's back to clockwise.

    Evil magiks ITT.

    MKR on
  • NogsNogs Crap, crap, mega crap. Crap, crap, mega crap.Registered User regular
    edited October 2007
    well, with the spinning girl, your eyes can see her going both ways. however, if you reference the shadow, she can only logically be going one way because of when the shadow appears. Since we don't see the full shadow and jsut one swing of it, the shadow must be shown with the leg is behind her and when she is lowest to the ground.



    or at least, i think thats the way its gotta be. i could be comepletely wrong

    Nogs on
    rotate.jpg
    PARKER, YOU'RE FIRED! <-- My comic book podcast! Satan look here!
  • JC of DIJC of DI I think we're fucked up. I know I am.Registered User regular
    edited October 2007
    And now I can't get it to spin counter-clockwise using the same way I got it to before. This thing will be taking over most of my day off now.

    JC of DI on
    PJWczLu.png
  • MKRMKR Registered User regular
    edited October 2007
    I thought maybe my brain was somehow wired differently, or you were all just crazy.

    But now...now I can see in to the future.

    Edit: It did it again!

    D:

    MKR on
  • KnobKnob TURN THE BEAT BACK InternetModerator Mod Emeritus
    edited October 2007
    Nogs wrote: »
    well, with the spinning girl, your eyes can see her going both ways. however, if you reference the shadow, she can only logically be going one way because of when the shadow appears. Since we don't see the full shadow and jsut one swing of it, the shadow must be shown with the leg is behind her and when she is lowest to the ground.



    or at least, i think thats the way its gotta be. i could be comepletely wrong

    you are

    Knob on
  • KnobKnob TURN THE BEAT BACK InternetModerator Mod Emeritus
    edited October 2007
    i'll do a drawing later

    Knob on
  • MKRMKR Registered User regular
    edited October 2007
    Nogs, this is some freaky stuff. It's not "Ok I am convincing myself it's going the other way, whoo."

    It is going the other way. I wouldn't believe it if I hadn't seen it myself.

    Edit: Just do something else like play solitare while it's in your peripheral vision. Don't try and see it - when it flips it'll grab your attention.

    MKR on
  • NogsNogs Crap, crap, mega crap. Crap, crap, mega crap.Registered User regular
    edited October 2007
    oh now, ive seen it switch directions. i just think because of when and how the shadow is appearing in relation to the bobbing and spinning of the girl, it can only logically be going one way.

    but like i said im probably completely wrong.

    Nogs on
    rotate.jpg
    PARKER, YOU'RE FIRED! <-- My comic book podcast! Satan look here!
  • redimpulseredimpulse Registered User regular
    edited October 2007
    MKR wrote: »
    window_paradox.gif

    This.

    This has broken my mind.

    redimpulse on
    rbsig.jpg
  • tsplittertsplitter Registered User regular
    edited October 2007
    MKR wrote: »
    window_paradox.gif

    i dont get this one

    tsplitter on
    FqmsaJ6.png
  • tsplittertsplitter Registered User regular
    edited October 2007
    oh wait now i do

    tsplitter on
    FqmsaJ6.png
  • ProcrastinatorProcrastinator Registered User regular
    edited October 2007
    tsplitter wrote: »
    MKR wrote: »
    window_paradox.gif

    i dont get this one

    I demand a t-shirt version!

    Procrastinator on
    plan.jpg
  • MKRMKR Registered User regular
    edited October 2007
    tsplitter wrote: »
    oh wait now i do

    Is your mind blown?

    MKR on
  • tsplittertsplitter Registered User regular
    edited October 2007
    not so much

    tsplitter on
    FqmsaJ6.png
  • MKRMKR Registered User regular
    edited October 2007
  • MonkeybombMonkeybomb Registered User regular
    edited October 2007
    MKR wrote: »

    I'm going to patent wearing pants.

    Monkeybomb on
    Xbox Live Gamertag: Triplemonkeybom
    monkeysig-1.jpg
  • MKRMKR Registered User regular
    edited October 2007
    Monkeybomb wrote: »
    MKR wrote: »

    I'm going to patent wearing pants.

    Given the state of the patent system, it would probably be easy to get. I doubt you could defend it, though.

    MKR on
  • DruhimDruhim Registered User, ClubPA regular
    edited October 2007
    Nogs wrote: »
    well, with the spinning girl, your eyes can see her going both ways. however, if you reference the shadow, she can only logically be going one way because of when the shadow appears. Since we don't see the full shadow and jsut one swing of it, the shadow must be shown with the leg is behind her and when she is lowest to the ground.



    or at least, i think thats the way its gotta be. i could be comepletely wrong
    you're completely wrong

    Druhim on
    belruelotterav-1.jpg
  • NogsNogs Crap, crap, mega crap. Crap, crap, mega crap.Registered User regular
    edited October 2007
    well, that's nice to know, i guess.

    Nogs on
    rotate.jpg
    PARKER, YOU'RE FIRED! <-- My comic book podcast! Satan look here!
  • DruhimDruhim Registered User, ClubPA regular
    edited October 2007
    also I think what really throws people off is what they perceive as her shadow, and they think that she can't be spinning the other way because that wouldn't make any sense

    it's not a shadow, it's a reflection off a shiny surface

    that may seem like a trivial difference, but it actually makes a huge difference because the angle of view would be different for each way she's rotating, and that's why her reflection actually does work whichever way she's spinning

    Druhim on
    belruelotterav-1.jpg
  • WezoinWezoin Registered User regular
    edited October 2007
    In psych class today we had some pretty neat ones. I'm trying to find an opponent pair optical illusion that depletes one of the sets of cones by staring at it for a minute or so, forcing everything to flip (ie, a green and black canada flag with a dot in the middle makes a red and white canada flag after the image is removed)

    Worst comes to worst I'll try and make my own tommorow, despite the potential for failure.

    Wezoin on
  • WezoinWezoin Registered User regular
    edited October 2007
    Ahhh, found it.

    Ok, stare at the dot for about a minute, then stare at a white piece of paper, or webpage, or something white.

    f03_13.gif

    Might be easier to do at:
    http://i123.photobucket.com/albums/o300/Wezoin/f03_13.gif

    Explanation:
    Essentially, at the level of the ganglion cells, your vision is broken down into opponent pairs (red and green, for example, are sensed by the same cells, only use different frequencies to transmit the different colours. Same goes for black and white, and yellow and blue. (Before anyone jumps on me, I realise that the conical level has an RGB breakdown, but that has little to do with this effect)) If one colour in a specific opponent pair is used too much, it becomes exhausted, and won't use that frequency for a while after that. It still sends signals, just not that signal, therefore, your brain sees everything that was black as white, red as green, and yellow as blue (and vice versa for all of those.)

    ALSO, I am by no means guaranteeing this as the absolute truth. I'm probably missing something as im just a 1st year student.

    Wezoin on
  • OrestesOrestes Registered User regular
    edited October 2007
    I CAN'T GET HER SPINNING COUNTER CLOCK WISE

    WHY WON'T SHE GO?!

    Orestes on
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