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illusions.
Former Member
Posts: 1,876,323 The Mix Honorary Guru
in General Chat
In Herman's Grid (pictured) you might see some fuzzy little dots in the intersections between the black squares. They are really not there. The effect is caused by specialized light receptors. The fuzzy spots are caused by drowsy light receptors sending ghostly after-images to the brain. Even though it is an after-image effect, the "cause" of the illusion is contrast. 0
Comments
Apart from the green and white background, how many colours can you see?
It may look as if the two arms of the 'X' use different shades of pink, but in fact the whole X only uses a single colour.
Explanation
The difference is that one arm of the X consists of pink squares that replace white squares in the background. Thus these pink squares are surrounded by green squares.
The other arm of the X also consists of pink squares, of an identical colour, but in this case they replace green squares in the background, and are therefore surrounded by white squares.
Painters have long known that the way a colour looks in a painting is affected not only by the actual shade of the colour itself, but also by the colours that surround it.
If we zoom in to the central part of the image it should become more obvious that the 'X' only uses one colour.
A Great Illusion!
Just count the little black balls...
You will probably have come across examples of pictographic ambiguity before, where a single drawing has more than one 'image' contained within it, depending on how you look at it. This picture, My wife and my mother-in-law, is a particularly good example, and was published in 1915 by the cartoonist W.E. Hill. Even experienced psychologists can sometimes find this hard. One clue - the chin of the young woman becomes the nose of the old lady.
A Party Trick for when the wine is flowing...
A good trick to try on a group of drunken scientists
HOW TO DO THE TRICK
Explain that just as a glass prism splits up the different colours of white light, when different coloured light passes through glass, it is also affected to an extent that depends on its colour.
Write the words CARBON DIOXIDE on a piece of paper, CARBON in red and DIOXIDE in blue. Put the paper close behind the stem of a wine glass, and look at the words through the stem. The red letters turn upside down, but the blue ones don't.
So is the glass affecting the red light more than the blue?
HOW IT WORKS
You weren't fooled, were you? This has nothing to do with the different colours of the words, or of red light being bent more or less than blue light.
The stem of the wine glass turns both words upside down, but because DIOXIDE is symmetrical about a horizontal line, you don't notice that it is upside down - it looks just the same either way.
dinosour.
interlocking rings.
this one is excellent. your brain/memoery fills in for whats missing.
Stare at the picture for about 45 seconds. Then, stare at the white section You should see the Queen again. Keep your concentration, and for those 45 seconds, don't take your eyes off the picture.
In this illustration, the stairs should turn upside down during a steady gaze. The wall with the floating glass sphere will shift from the foreground to the background. Of course, if you originally saw the background as the foreground, you will notice a change from the background to the foreground.
HEY IT'S DRUG FREE!
This illusion is similar to the young girl - old woman illusion. Here is a helpful hint: the Rabbit faces one direction, and the duck the other.
I used to have a pack of optical illusion cards. They came free with raisen splitz one day. :chin: i feel all nostalgic now, if thats the right word to use.
can see all of them except the smarties to the fish ones, i can never do them!
Oh my god - I saw a picture of the man who they say is jesus
Hah omg now actually i'm pretty impressed with that one
OMG at first i thought I had one too many vodkas cos i seen nowt and then I saw in and shit myself :eek2:
Maybe it'll scare you into becoming a nun!
Priest- "So Ness, what made you want to become a nun?"
Ness- "The Good Lord came to me in a vision"
The jesus one was very good though;)
I think I will keep being *Norty Nun*