Showing posts with label optical illusions. Show all posts
Showing posts with label optical illusions. Show all posts
Motion obscures awareness of color changes
"Here, we show that objects changing in hue, luminance, size, or shape appear to stop changing when they move."
If you focus your eyes on the center of the video, you can see the dots on the periphery change color, but when the ring of dots begin to rotate, their changing of color becomes less apparent - a phenomenon referred to as motion-induced silencing.
From the Department of Psychology at Harvard University, as reported in the abstract at Current Biology, via Neatorama.
The "Confuzzle" optical illusion
I believe this is a variant of the old "Disappearing Man" illusion. Instructions for creating your own Confuzzle with posterboard and ruler and scissors is at Instructables.
Via The Upcoming Queue.
Best visual illusion of the year, 2010
In this video, wooden balls roll up the slopes just as if they are pulled by a magnet. The behavior of the balls seems impossible, because it is against the gravity. The video is not a computer graphic, but a real scene. What is actually happening is that the orientations of the slopes are perceived oppositely, and hence the descending motion is misinterpreted as ascending motion. This illusion is remarkable in that it is generated by a three-dimensional solid object and physical motion, instead of a two-dimensional picture.Link for other contest winners.
Via Neatorama.
This is not a spiral
Found at La Mia Banbina e Techno.
A nice optical illusion
It's right at the 0:41 second mark that I lose the ability to see it for what it really is.
Which face is male? Which is female?
The two faces are actually identical in terms of morphology - the shape and position of the facial bones and the features. The only difference between the two is that the one on the left was generated using higher contrast. One implication is that high-contrast faces tend to be interpreted as more feminine than low-contrast faces.
This is one of ten interesting items in a set at Scientific American. The paired faces also placed third in the this year's Best Visual Illusion of the Year Contest. TYWKIWDBI has previously posted the winner and the runner-up.
Via The Daily Dish.
Count the circles - The Coffer Illusion
Most people view this as a set of door panels. It may take quite a while to convince oneself that there are actually 16 circles in the image...
"Weeping" glacier
Photograph taken at the Austfonna ice cap in the Svalbard archipelago, published in the Daily Mail. Alex at Neatorama points out that this is an excellent example of pareidolia:
Common examples include seeing images of animals or faces in clouds, the man in the moon, and hearing hidden messages on records played in reverse. The word comes from the Greek para- ("beside", "with", or "alongside"—meaning, in this context, something faulty or wrong (as in paraphasia, disordered speech)) and eidolon ("image"; the diminutive of eidos ("image", "form", "shape")).Photo credit Michael Nolan/SpecialistStock/Barcroft Media.
Optical illusion
The two photos are identical - even though it appears that the tracks are more vertical in the right photo and more slanted in the left one.
Similar in concept to the Leaning Tower of Pisa illusion.
Via within the crainium.
Round circles optical illusion
The pattern made by the black and the white boxes is that of four round nested circles. They are NOT arranged in a spiral.
An audio illusion
Click this video to play it. When it finishes, click the "replay" button. Your mind will think that the sounds are continuing to rise along the musical scale, whereas in reality it's absolutely the same tonal sequence repeated.
Via Presurfer.
Via Presurfer.
Bent lines optical illusion
All of the elements in the following image are perfectly aligned vertically and horizontally. There are no bent lines.
This spiral does NOT have blue and green arms
The "blue" and the "green" are actually the SAME COLOR. The RGB numbers are 0, 255, 150, which for convenience we will call bluish-green (see small inset, left, which contains a sample from the greenish arm and one from the bluish arm).The reason the spiral arms appear different colors is that when the bluish-green is embedded in purple in looks blue, and when embedded in orange it looks green - as shown in the bottom magnified view.
There is more explanation of this fascinating optical illusion at the Discover Magazine link, and some discussion at Neatorama. Via J-Walk.
Afterimage visual illusion
Last week I blogged the Best Visual Illusion of 2009. Here is the runner-up, illustrating the principle of "afterimage." You need to view it at the link, because the illusion requires motion; the inset above is just a screencap.
Best Visual Illusion of the Year - 2009
Even if you're bored with seeing the many optical illusions on the 'net (or the dozen stored here at the blog), this one is worth a visit. The image above is a screencap which doesn't reproduce the remarkable effect.
The animated illusion is HERE, along with links to many others.
The Thatcher Effect
Wonderfully illustrated by the bizarre face on the upper of the three girls in this manipulated photo.
Don't see it? Read the link, and, if necessary, invert your monitor.
Found at Nothing to do with Arbroath.
Not the face of Jesus
An old sepia-toned photograph with what appears to be a bizarre, curly-haired, mustached large head positioned between a man and woman.
It's actually a child sitting on the man's lap. Her cloche-style hat forms the "forehead" and her right arm the "nose." There's foliage between her and her mom.
The image doesn't supersize, but perhaps you can do option-command-+ (or the PC equivalent) to zoom in on your monitor.
Found at Our Strange World.
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