Mathematical Illusion 64=65

I was pointed to this mathematical illusion by Pardalote Flits. This illusion presents something you know to be false in a simple visual way that might confuse your senses.

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3d kaleidoscope

Below is a 3d kaleidoscope from Tekhna3d.com it is part of their experimental net3d model. There are many other interactive 3d demos to checkout on their site. Some you just move the mouse and others clicking the left mouse button moves you through the landscape.

This item requires that you have Macromedias Flash to run it. If the kaleidoscope is giving you problems, center the image then point your mouse over the image and press the right mouse button, now select restart.


If the kaleidoscope is giving you problems, center the image then point your mouse over the image and press the right mouse button, now select restart.

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Sketching 101

Click on the image below, flash is required. It'll take a while before you really notice what's going on, but a woman is being drawn, from the inside out.

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The Green Square

I found this at the "Max Planck Institute for Biological Cybernetics" They worked In collaboration with Dan Kersten, Minnesota, USA to demonstrate the below illusion.

If the cast shadow of an object is moving, we assume that the object is moving and not the light source... ...A moving shadow induces a motion in depth of a stationary object (green square is not moving).

Just in case it is not yet understood. The green square above is absolutely still. It does not move. The shadow on the other hand is animated and does move across the image including changing the color slightly of the green square. This moving shadow creates the illusion of movement of the green square.

Update: Try this. Take out your ID card and cover half of the green square from the bottom left diagonal to the top right. Now it is apparent that the square is not moving. Very interesting effect.

Update 2: I just noticed something I had previously not realized. It looks like the shading of the green square changes. It seems as the shadow moves the tinting and shading on top of the green square is also manipulated to complete the illusion. The truth is not only doesn't the green square move but it is a constant non-varying shade of green. These two illusions here and here can explain why it appears as if the shading on the green square changes.

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The Haze Illusion

From the same team at MIT that brought you the Checker shadow illusion here is a flash movie demonstration that outlines how the some shades of color can be made to look different when the context of what it around them changes.

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Rats on Parade

This is a creepy animation. I found it at zoneflash.net The site is in French and I don't understand a word, but it has some good interactive flash animations. Go to their site and try a few links, I think this interactive animation is fascinating, move your cursor through and around this flash and see what happens.

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The Zoom Quilt

The Zoom Quilt is a patchwork of images sewn together to give you the illusion of a 3d world. It is a collaborative art project based on Macromedia Flash that illustrates what a 3D Zooming User Interface (ZUI) might look and feel like.

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Trippy Mirror Animation

This optical illusion is an excellent example of a recursive animation.

Click on the link below the animation to go to the creator's site.

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