 Skewed lines
All these tracks look as though they've come from a broken
down railway track, but in actual fact, they are perfectly parallel! To prove
they really are parallel, watch the small 'hairs' gradually disappear. You will
see the lines as how you would expect them to be.
Green Fade
illusion Another optical illusion I created, or rather discovered
accidentally, but it turns out it's a superior version of another optical illusion
already discovered, Cornsweet illusion, also known as
Craik-O'Brien-Cornsweet illusion . You'll need to have your PC in 24 bit
colour to see it properly. It looks as though the green bar above is
getting lighter further to the right. But in actual fact, it's exactly the
same shade on the far right as it is on the far left..... "Light Green"
really does equal "Dark Green"!
 At first, there doesn't seem anything unusual about this
picture. I mean, it's just a bunch of diagonal lines and a slightly distorted
square in the middle - right? Wrong.
Believe it or not, the 4 lines that make
up the square are actually perfectly straight. In fact it /is/ a perfect square.
For proof of this, the animation will swap between the two frames so you can see
the square remains the same. Also check by loading the pic into your favourite
art package.
The glowing core
Look into the centre (white point) and stare for a while.
How many colours can you see altogether in the object? You should see a
purplish circle... and the 4 rotating 'wings' are tinted green. Make sure
you always keep focused on the centre.
Once you've done this, read on...
Are those four wings really green? Amazingly, they are exactly the same
colour as the circle inside. Don't believe me? Well try following one of the
wings round. You'll see that the colour matches the inner circle perfectly.
NB. The faster the circle rotates, the better
the optical illusion will work. Unfortunately, Explorer has great trouble displaying
GIF animations faster than about 10 frames per second, so I suggest saving
the anim and then using an external such as Irfanview. Visit
http://www.irfanview.com/ for more details.
Wheel of Confusion
Which way is the wheel
turning!? Focus on the red dots and follow them round... it
appears to be rotating anti-clockwise. However, if you follow the yellow
dots round instead, the whole wheel will be turning the other way! -
clockwise!
Try to count the number of black dots on the image below...
Vanishing
Fluff
Stare at the black dot for a minute (the longer the
better), and watch the colored 'fluff' disappear!
disapaer
Find your blind spot
Another popular one - and quite unnerving if you've
never seen it before...
Close your left and eye and just focus your right eye
on the tiny cross. At some point the big circle will disappear as it crosses
your 'blind spot'. If you can't see this effect, then try sitting closer/further
from the screen. scree
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Amazing optical illusions
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