The guy in the cap doesn't get it, but the smart bald guy in glasses knows how it works. From the Bell Science Series film, "Gateways to the Mind" (1958).
Watch the full film (complete with nostalgically warbly soundtrack): Read the rest
There are twelve black dots in this image. Why can't you see all twelve at the same time?
I replaced the black dots with red dots, and it is easier to see them all at once. Read the rest
He also makes a lot of cool creations involving images of mice and ants.
Once you see it you can't unsee it pic.twitter.com/5mREeJUhYV— bree (@msbreeezyyy) October 25, 2016
It took me a while to figure out what the deal is with this photo. I thought at first someone coated their thighs in oil. But then I saw it for what it really was. It reminds me of a Necker cube, only for legs. Read the rest
Reality shatter. The two objects are traveling in exactly the same manner. Watch when it turns gray. pic.twitter.com/HpZsudeXSG— Cliff Pickover (@pickover) June 18, 2016
Clifford Pickover says, "Reality shatter. The two objects are traveling in exactly the same manner. Watch when it turns gray."
Reality distortion. The orange dot that doesn’t actually change size. pic.twitter.com/7oMUtjYFhZ— Cliff Pickover (@pickover) June 17, 2016
I had to stare at this for a few minutes. Via Neatorama.
The blue elements in the image above appear to be a arranged in a continuous spiral, but in fact they form a series of concentric circles. Your brain will argue so strongly for a spiral that you may need to run your mouse cursor around the circles a few times to convince yourself.Read the rest
Kokichi Sugihara's Ambiguous Cylinder Illusion was a finalist of the Best Illusion of the Year Contest 2016. Do you know how it works?
After watching Ben Ridgway's "Continuum Infinitum" video, everything I looked at seemed to recede for a while. Ben recommends downloading the video and looping it.
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As you watch the movie for a minute or so and then look away, you will experience a mild optical illusion that feels as if everything you look at is shrinking away from you. This is caused by the motion after-effect (MAE). It is a visual illusion experienced after viewing a moving visual stimulus for a time (tens of milliseconds to minutes) with stationary eyes, and then fixating on a stationary stimulus. The stationary stimulus appears to move in the opposite direction to the original (physically moving) stimulus. The motion aftereffect is believed to be the result of motion adaptation.
Neurons coding a particular movement reduce their responses with time of exposure to a constantly moving stimulus; this is neural adaptation. Neural adaptation also reduces the spontaneous, baseline activity of these same neurons when responding to a stationary stimulus. One theory is that perception of stationary objects, for example rocks beside a waterfall, is coded as the balance among the baseline responses of neurons coding all possible directions of motion. Neural adaptation of neurons stimulated by downwards movement reduces their baseline activity, tilting the balance in favor of upwards movement.
"This is an amazing piece of 3D art [by Patrick Hughes and on display at Birmingham Art Gallery] where the closest part of the picture appears to be the furthest away, an optical illusion known as "Reverspective". As you move around the painting, the room in the painting appears to move with you." Read the rest