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$2.95
per postcard
Grid Optical Illusion Design Postcard
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Paper Type
Signature Matte
18 pt thickness / 120 lb weight
Soft white, soft eggshell texture
-$0.30
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About This Design
Grid Optical Illusion Design Postcard
Lingelbach Scintillating Grid Optical Illusion The scintillating grid illusion is an optical illusion, discovered by E. Lingelbach in 1994, that is usually considered a variation of the Hermann grid illusion. It is constructed by superimposing white discs on the intersections of orthogonal grey bars on a black background. Dark dots seem to appear and disappear rapidly at random intersections, hence the label "scintillating". When a person keeps his or her eyes directly on a single intersection, the dark dot does not appear. The dark dots disappear if one is too close to or too far from the image. Description from Wikipedia
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4.9 out of 5 stars rating15.9K Total Reviews
15,865 Reviews
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5 out of 5 stars rating
By Deidre T.9 March 2023 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Zazzle Reviewer Program
Exactly what I wanted, it is very difficult to acquire Vintage Australiana items. I am so please that I ordered 8 I will be using them for my scrap booking and Junk Journaling. Gorgeous, Zazzle produced and delivered exactly what I wanted.
5 out of 5 stars rating
By Deidre T.9 March 2023 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Zazzle Reviewer Program
Way better quality than I ever expected. I love the colours, font and quality of the card. I'm so pleased I found Zazzle as it is near impossible to purchase Vintage or Retro Australian memorabilia online. I chose this design when I purchased them. They are perfect for my projects. I was very specific about what I wanted. I know where to come now when I need to order similar items.
5 out of 5 stars rating
By Michaela A.5 December 2022 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Zazzle Reviewer Program
Perfect for the occasion I was using it for.
I was able to delete the lines so I could put in more wording.
Had an envelope so the address side wasn't necessary. Print quality and paper quality lovely.
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Product ID: 239228289502131240
Added on 11/5/15, 9:46 am
Rating: G
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