Estimation
3 October 2013 0 Comments
There is something special about this post… it marks the 300th post to An Optical Illusion! A big thank you to our loyal visitors who have submitted material and provided valuable feedback since the inception of this blog. We always love to hear your thoughts, so please let me know what you would like to […]
Composite
30 September 2013 0 Comments
In the past, we have featured images made from thumb tacks, sea shells and even Post-it Notes. Sarah Rosado, a photographer and artist based in New York, creates her images using something that you might not expect – dirt. She calls this series of photographs “Dirty Little Secrets”.
Hidden Objects
26 September 2013 4 Comments
Hiding somewhere in this pile of coffee beans is the face of a man. Can you find him? He blends in pretty well with his surroundings, but once you spot him, you will see him instantly the next time you view this coffee bean human photo.
Forced Perspective
23 September 2013 0 Comments
“Dreams of Flying” is an ongoing series that began in 2002 from photographer Jan von Holleben. Drawing inspiration from childhood books and modern superheroes, he uses children from his local neighborhood in Southwest Germany to create entertaining and whimsical scenes.
Ambiguous
19 September 2013 0 Comments
This photograph, taken at the Phaeno Science Center in Wolfsburg, Germany, shows a very strange set of columns. They look like they could be pieces for a very large chess set. These particular columns are unique because they also have an alternate meaning – the spaces between the columns appear to resemble human figures. This […]
Video
16 September 2013 0 Comments
Last year, we featured a video showing the Mirage 3D Hologram Generator in action. You place a small object inside the unit and it projects a hologram (using mirrors) of the same object that appears to hover above the unit. They are a really cool item to have on your desk or give to someone […]
Estimation
12 September 2013 0 Comments
Do the two ends of the green line passing behind the gate appear offset or aligned? The two ends of the line are completely aligned, although they appear to be offset. If you don’t believe it, use something straight, like a ruler or sheet of paper, to confirm. German physicist Johann Christian Poggendorff discovered this […]