bugglebun
Alpha Buck
....found in attic ....
From the Daily Mail July '94.....viewing techniques:-
1. Let eyes relax, stare vacantly into space as though looking through the image; obesrve without looking at it.
2.Cross eyed technique. hold up finger/pen between eyes and the picture and look at pen tip....causes eyes to cross. Shift awareness but not your focus to screen. Gradually move finger/pen back and forth until image comes to view.
If you don't get the knack in a couple of mins wait for a quieter time to try again.
Says don't over do could lead to eye strain; Those with one eye,a squint,astigmatism or with one very dominant eye will not be able to see the hidden image. The short sighted have an advantage if they remove their glasses....
..... enjoy!