 Cloaking or obscuring is gradually becoming a reality. This has been achieved by the guys over at Rochester University by bending light via standard optical lenses. The video below shows how they did it. 
This great animation was produced by the guys over at Bees & Bombs, check out their website its excellent
How many countries can you name? Click for larger view.
We have posted a number of pictures over the years showing buildings on tilt that aren't really on tilt, just illusions. So it's nice to actually show you a building that is really on tilt. This one is in South Korea and was still under construction when it began to collapse sideways on Monday morning.   Here is a really interesting video we found over on YouTube. It shows how to conceal what you are looking at on your computer from prying eyes.
Yes there is a message hidden here, can you read it. The best way is to tilt the screen and look up from below (easier on a phone or tablet. For those who would like a little help click here.  On first glance, you probably thought these images were four different pictures stitched together with Pic Stitch for Instagram or something. I don't blame you, it looks like a perfect windowpane. But what's crazy is if you look closer, these four images are actually just one single photograph. What! 
Here's a look of the set, which purposely trips your mind out, from another angle. It reveals that everything in the image above is in the same shot: Via gizmodo 
Take a look at this vintage animation. Now try and follow the spiral around and around down into the middle. Not easy.  This great animation shows a 2D animation of circles and lines that produces a 3D illusion, it was produced by the guys over at Bees & Bombs, check out their website its excellent. 
Is this ring of dots turning clockwise or anti-clockwise. well actually its not doing either. Each individual dots is circulating anti-clockwise giving the impression that the out side is going in the opposite direction inside. This great animation was produced by the guys over at Bees & Bombs, check out their website its excellent. 
Here at Optical Spy we love innovative art. This piece, by Gary, Aaron & Khairul brings together an idea about the fragility of life in a subtle and gorgeous way. If you would like a copy, it’s on sale here at Degree 
If we start a small circle rolling around the interior of a large circle of twice its diameter and we follow a point on the small circle shown here as red dot, what pattern will it draw? Click the picture to find out. 
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