Stare at the eye of the red parrot for about 30 seconds,
then look immediately at one spot in the empty bird cage.
A blue-green colored bird will appear in the cage.
Try the same thing with the green cardinal.
A faint magenta bird will appear in the cage.
Concentrate on the blue light for 30 seconds
and shift your gaze onto the white surface nearby.
~ click on the image for an explanation ~
Stare on the little cross on the left and after a minute or so,
switch your focus to the cross on the right.
The black and white photo now becomes pink.
Stare at the black light bulb below for at least 30 seconds. Then immediately stare at a white area on the screen or at a sheet of paper. You should see a glowing light bulb!
ghost of Houdini
Stare at center of the image below for 60 seconds. Then immediately stare at a white area on the screen or at a sheet of paper. Wait to see if Houdini’s image slowly appears!
Che Guevara
Stare at center of the image below for 60 seconds. Then immediately stare at a white area on the screen or at a sheet of paper. Che Guevara’s image will slowly appear!
Stare at center of the image below for 60 seconds. Then immediately stare at a white area on the screen or at a sheet of paper. Image of Santa Claus will slowly appear!
Stare at the colored image one on the left for about a minute. Then, shift your focus to the center spot of the image on the right.
Which afterimage did you see first?
You can actually shift the afterimage you experience by focusing on the vertical rectangle outline or the horizontal rectangle outline.
Focus at the center of the spinning spiral below for about 30 seconds, then quickly scroll down and take a look at the second image.
