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Penny Farthing Optical Illusion

1/31/2015

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Simple question, which way is the Optical Spy Penny Farthing cycle going, forwards or backwards?
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Audible Illusion

1/30/2015

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In this audio clip a spoken sentence is turned into gibberish using audio filters the first time you hear it. But when you hear the original version your brain makes sense of what before sounded like complete nonsense.

It is the same phenomenon as optical illusions when your eyes only see one image until another is revealed, like our Adam and Eve Illusion. Your brain does the same processing to what you hear and the audible illusion appears.
Also check out the McGurk effect, which is another astonishing audible illusion and the Sheppard Tone illusion which is shown near the bottom of the home page.
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Dali's Reflections

1/29/2015

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Salvador Dali's original Swans Reflecting Eleephants.
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Our modification to Dali's original
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Three Arcs Optical Illusion

1/27/2015

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Which of these three arcs will make the largest complete circle? Click the optical to find out.
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Wow Optical Illusion

1/26/2015

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See Through Building Optical Illusion

1/25/2015

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Image credit -  Ricardo Liberato 
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Ben Heine's Animated Hong Kong Teddy Bear

1/24/2015

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If you are an Optical Spy regular you will be aware that I am a big fan of Ben Heine. When Ben uploads photo's from his travels around the world I am always inspired to make an animation. This latest one was great fun making. Hope Ben likes it.
Ben Heine Gallery
Ben Heine Bio
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Adam and Eve Optical Illusion

1/23/2015

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Did Eve really make Adam eat the forbidden apple? Well this optical illusion looks like they both had a bite!
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Underwater Pole Dancer Optical Illusion

1/22/2015

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Click or hover over picture to reveal. Image source brettstanleyphoto.com
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Car Size Illusion

1/21/2015

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These two cars look completely different sizes because your eyes see the 3D perspective you would normally associate with a 2D photograph. But the actual 2D size here is exactly the same. Original image source unknown.
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Flatlight - 2D/3D optical illusion candle holder

1/20/2015

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Leprechaun Optical Illusion

1/19/2015

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Here is the first photograph of an Irish leprechaun. With his ginger beard, crumpled up nose and pursed lips he looks a little strange. Just hover over or click the picture to see what is really going on.
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Color Optical Illusion

1/17/2015

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Floating Spy Disk Optical Illusion

1/16/2015

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The Melancholic Princess

1/15/2015

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According To legend, Robert Chang painted a picture of a Japanese girl called the Melancholic Princess. He then posted it on the Internet and-committed suicide.
Some people who saw the picture declared that, if you look at it for a short while the picture starts to move, or age, or smile, or change - everyone saw something different . What do you see? Let us know below.
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Walt Mossberg Upside Down Optical Illusion

1/14/2015

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Hover or Click to invert
This upside down illusion is of our favourite Tech Guru Walt Mossberg. If you'de like to read any of Moss's excellent work you will find it here recode.net
More Upside Down Illusions
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Stepping Out Optical Illusion

1/14/2015

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I've got a great illusion for you today. You will see above a grid with two black and white blocks moving from right to left and back again. It appears that the blocks are not moving smoothly, but stepping from one line to the next. This is only an illusion. If you press the add words button at the bottom you will see that when we put the optical spy words on the blocks they now flow smoothly back and forth. But the movement of the blocks hasn't changed at all, it just overrides the illusion. Press remove words button to reset.
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Color Red Optical illusion

1/13/2015

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Are the reds in both optical spy letters the same color? Just click on the optical to find out.
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Circle Squares Optical Illusion

1/12/2015

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Grid Optical Illusion Update

1/11/2015

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As an update to our grid illusion we have designed the same grid with dots. The only difference between the checker boards are the dots, the red and black squares are always the same.
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Richard Wiseman Upside Down Optical Illusion

1/10/2015

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Click or Hover to Reveal
More Upside Down Celebrities
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Father and Son Optical Illusion

1/10/2015

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Spy Wheels Optical Illusion

1/9/2015

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Scream Optical Illusion

1/8/2015

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Here is a scary illusion. Firstly, keep your mouse away from the image and let it just rotate. Get as close as you can and watch it rotating for about thirty seconds. Then without taking your eyes off of it move your mouse over the image. Then just enjoy!. It also works if you look at anything else, try looking at the back of your hand.
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The Face of God Optical Illusion

1/7/2015

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