Thursday, December 15, 2005

Checker Shadow Optical Illusion Revisited

It occurred to me today that the Checker Shadow Optical Illusion that I presented here could have been better presented if it fit my blogs color scheme so I decided to modify the original. I gave it a black background and changed the light source.

The bottom line is still the same. Square A and Square B below are the exact same color. Hard to believe isn't it?

I look at this and find it hard to believe. But I used the extension in Firefox called colorzilla which provides you with an eyedropper tool. I checked both of squares and sure enough the RGB values of the grays in both square A and square B are 135-135-135.


©1995, Edward H. Adelson (modified by Walt)

If you don't believe it print the image and cut out both squares then hold them next to each other. I have done exactly that. I know they are the same color, but my eyes refuse to allow me to see it by just looking at the picture. Try and convince yourself that they are the same color. I know it is true but I don't see it as being true.

0 comments:

Post a Comment

Related Posts Plugin for WordPress, Blogger...

Labels

Optical Illusion Face Pictures Tattoo Designs Man Animals Photography Hidden Moving Circle Painting Funny Girl Sexy Rotating Confusing Sign anomalous motion Colour Escher Eye Shadow anamorphosis Tattoo Creative Julian Beever Horse videos Dog painted illusion pavement art Birds Cat Dot Square Word color perception Color Fish Real Life Illusions Water art Akiyoshi Kitaoka Ball Dragon distorted perception perspective Skull Upside Down Waterfall science illusions Hand Flowers Illusion Art Impossible Moon Photo Illusion Statue Transparent Trick Wolf Zebra amazing photos animated 3D Art 3d Car Google Earth Jesus Scary Optical Illusions Street Triangle apparent motion flash fractals Dancing Eyes Head Puzzles Reading Size Tree Women Ambiguous objects Bathroom Brain Clothes Design Elephant Ghost Heart Hidden Object Lion Nature's Illusions Naughty People Snakes Star Sun Unusual Image circles erotic illusions illusions nude illusions what do you see APOD Advertisement Ambiguous People Artist Couple Cow DIY Dimensional Drawing Expansion Floating Focus Fruit Hidden Animals Lines Love Magic Mountain Naked Nature Ring Scary Toilet ambiguous art photo shadow illusions spiral Amazing Art Black Block Boat Building Camera Dizzle Glass Invisible Jim Warren Math Illusion Posters Puzzle Screen after-image prank science size distortion trippy word illusions Adds Illusion BiCycle Devil Drinking Earthquake Effect Flag Floor Herman J. Verwaal Kanizsa illusions Light Mirror Moniter Motion Rectangle Soldier Spider Spinning Swimming Pool Trompe l'oeil Vehicle Visual Weird Wheel architecture graffiti holidays impossible construction impossible device impossible objects interactive legos scintillate sculptures Auditory Illusion Batman Beautiful Body Art Brightness Butterfly Chair Christmas Cowboy Dices Dick Great Hot Kurt Wenner Language Michael Jackson Motorbike Name Old man Opposite Parallel Possible Queen Rocket Sandro Del-Prete Sculpture Sex Taj Mahal Tessellations Top Ten Upstairs Waving Where's Waldo Window Wolves Wood brain fun cyber deceptive photos fun halloween illusion advertising money peripheral drift photograph illusions plasma recursive special effect transparent displays vanishing illusions vedio Aeroplane Alphabets Artistic Awareness Balcony Bev Doolittle Billie Joe Armstrong Binocular Blend Celebrities Optical Illusion Celebrity Coca Cola Cube D. L. Rust Elisabeth Flowing Forced Perspective Gadget Garden Guitar Home Grown Horizontal Horror Inattentional Blindness Interesting Isia Leviant Jerry Andrus Joshua Callaghan Kelly M. Houle Lava Leaning Lift Lifting Object Illusion Memories Michael Bach Motion Induced Blindness Numbers Perpetual Motion Privacy Policy Queen Elizabeth Random Restaurant Richard Gregory Roger Shepard Sand Seconds Shigeo Fukuda Singer Sketches Sleeve Face Portraits Stitches Stroop Effect Style Tarot Tesla Coil Test Tigers Tobacco University Valentine Day Special Virgin Mary What are Optical Illusions What are They Saying Wine Zodiac art installment camouflage cards change blindness depth dizzy food ghosts illusion knitting illusion of individuality introduction kaleidoscope land shark paranormal postcard saturday night live script self portrait skit upside down faces verbal wallpaper warning welcome