Amazing optical illusion and back to Muybridge

This is a very interesting effect and I feel like doing it and it brought back to my mind Muybridge.

The experiment by Muybridge
The origin of motion capture technology referred to as MoCap, recording movements of people or other moving objects and analyzing them, can be traced back to the experiment done by Edward Muybridge, an English photographer, in 1872. He photographed each movement of a horse galloping, by using twenty four cameras lined up on the horse track, that were triggered when the horse ran past. From this, a series of 24 pictures of a horse galloping stride by stride was made. Those pictures first revealed the motion of a horse’s movement. Actually, that was when they proved that there was a moment when all four legs were in the air at the same time [6].

Source: here and here

Optical illusion

"Mom! Make is stop, make it stop, please!"

Complementary colors: Color Dove Illusion by Yuval Barkan & Hedva Spitzer

Tel-Aviv University, Israel

© 2009 Yuval Barkan & Hedva Spitzer

1- Fix your gaze on the central black point on the bird, as well as while the sky flashes. When the bird starts to fly, follow it, and keep staring at the black fixation point.

2- You’ll start to notice, that the “empty bird” is filled-in with a color similar to the previous background’s color. The colored image produces illusory colors, an afterimage on “empty” shape, which induces an effect opposite to the well known “afterimage” effect.

3- The common “afterimage” effect yields perceived complementary color, whereas the current effect shows an appearance of a color similar to that of the background, where originally, no physical color was present in the empty shape.

I could not help sharing it. It was 2nd prize at 2009 Best Illusion of the Year Contest. Change the colors. It is really amazing!
There are many works based on the fact that when our eyes stares at a color with a white background we see the complementary colors.
At this site you can do an interesting experiment with your children.


© 2009 Yuval Barkan & Hedva Spitzer
Source: Illusion Contest.
It's copyrighted and I didn't ask permission to the authors because I didn't find their address. I hope they understand that I'm publishing it here instead of sharing the link to assure people watch it.
Few people click at links. I think I'm promoting this work and it has to do with science that must be known by everybody.

If the authors ask I can remove it. I hope they don't.

Optical Illusion: why do we love to be fooled?

What amazes about these kind of illusions is that we love them and can't stop trying to figure out how do they work.
Our eyes were created in a way that makes it possible.
That's all.
Can you see the yellow balls moving?
Source: Facebook.