Think this is pretty cool !!

 

Alan......

Apoligies if it has already been done !!

 

Alan.......

cooool! :cool: not seen that before

How about this one. A little harder to see it.

oooohh freaky! :D

I can see the nappy too :nelson:

Think this is pretty cool !!

 

Alan......

 

 

LOL I thought it was Duffer for a mo :o ;)

Check this one out - the longer you stare at it, the better the effect - WEIRD!!

 

http://www.optillusions.com/dp/1-42.htm

WEIRED

 

steve

Strange, but good :D

 

Plus i now feel pissed with staring at that for a while :duffer:

How does that work?

How does that work?

 

 

When you look at an image for a very long time which is very contrasting and doesnt change much, the eye produces a chemical in the areas of the eye which is seeing this object. This chemical is to counteract any bright or contrasting images so that you dont damage your eyes. It is basically monitor screen burn on your eyes if any one has seen that.

When a monitor is on the same image for a very long time (Talking months none stop of the same image not moving) it burns that image onto the glass and on the pixels.

 

This is what exactly happens to your eyes.

 

The chemical is released into the eyes to counter act this bright area which could be "screen burned" on to your retina. The chemical is released onto the exact areas where you see the image creating a slight negative version of what you are seeing on your retina canceling out some of the light, making it less harsh and reducing the damage because its not as bright.

Because chemical reactions are slower than electrical ones it takes time for the chemical to be produced, hence why you have to look at the image for a long time for this to happen, and the longer you look the better it is.

And the same is for the chemical to leave. So when you look a way, the chemicals are still in your eye, counter balancing this image you where looking at, and still in the shape of the image you where looking at. So when you look some where else, you see a slight negative image of what you where looking at, because this chemical is still in your eyes.

 

For example, has any one seen the Jesus one? Where you look at a simple picure of him for a min or 2, then close your eyes and an image appears.

 

Your eyes start to get damaged because you are looking at a bright picture of Jesus on the paper. Your eyes release a chemical to stop screen burn and only releases it on the areas where the light is landing on your retina, so the chemical is in a Jesus shape pattern. This chemical makes that part of the eye see another colour to stop the severity of the light.

 

You close your eyes your retina sees nothing but this Jesus shapped area of chemicals is still on your eyes. This chemical makes you see another colour to stop the severity of light, but there is no light so you only see the jesus shaped chemical area on your eyes.

 

Its the same with the swerling picture.

 

Did any of that make sence?

we were hoping for a more in-depth explanation Stu :eek: :)

first one is on a def leapard album cover i think

Few more.

 

Might have been seen before, but still worth a look !!

 

SRRAE; Took a few minutes, but brilliant when you get it !! Whisky helps!!

 

Steve; Which Def Leppard cover ???

 

Alan........