its very touching when i was staring at the computer screen and then stared at the wall i saw the face plain as day for at least two minutes and yes i know you guys thought it was going to be something crazy jumping out of the screen cause you know me i always post something crazy but this time it wasn't
It's cool! We did this kind of thing when I was at Art College! It also works for finding the opposite colour on the colour wheel!! (stare at a block of colour and then when you look away or shut your eyes, you will see the opposite colour!! Cool huh?!!
great example of after-images It's down to the retina having absorbed enough light in a picture to be able to still see it after you stop looking at it. It's like when you look at a lightbulb and then when you look away you see little green blobs in your eyes still. Very easily explained and nothing unnatural or paranormal about this whatsoever, but still uber cool