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Topic: Optical illusion


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In the News (Sun 19 Nov 17)

  
 Optical Illusion Posters, T-shirts, Gifts & More : CafePress.com
We have operated eluzions.com since 2001, where we display and discuss a wide range of optical illusions.
Illusions fool your mind into seeing a false reality.
Identical lines will appear to be different lengths, ghostly dark blobs appear where the screen or paper is white, black and white patterns appear to move when they can't, etc. They can be so convincing that you may have to check for yourself that there's no trickery involved.
www.cafepress.com /eluzions   (189 words)

  
 Archimedes' Lab book selection
a collection of original optical illusions and ingenious puzzles with easy-to-follow instructions that let you both create and solve them on your own (in Italian or in French, but very well illustrated).
A collection of geometric and topological puzzles plus optical illusions with easy-to-follow instructions (in Italian).
Please report any error, misspelling or dead link.
www.archimedes-lab.org /bookselection.html   (138 words)

  
 Illusion Shirts, Mugs, Posters, and Other Products [encyclopedia]
We are pleased to offer a wide range of optical illusion products through Cafe Press.
You will be redirected to our Illusions Store in a few seconds or you may click on the http://www.cafepress.com/eluzions URL.
Products related to Illusion Shirts, Mugs, Posters, and Other Products: books, DVD, electronics, garden, kitchen, magazines, music, photo, posters, software, tools, toys, VHS, videogames
eluzions.com /Shop/Illusions   (86 words)

  
 A.C.E Official I.Q. Test, optical Illusions, and Games Website 2004-2005
A.C.E Official I.Q. Test, optical Illusions, and Games Website 2004-2005
Listing 20 Illusions in this Category - Steriograms
Sign up for our email list and receive update news in your e-mail!
www.aceviper.net /pick_illusion.php?cat=Steriograms&row=0   (59 words)

  
 Newsletter (January 2006)
New Optical Illusions is filled with superb, colorful optical illusion illustrations, all designed and drawn up by Archimedes Lab, the Italian puzzle and illusion creator.
For lovers of ingenious optical illusions and paradoxes.
The book contains many new and previously unpublished optical illusions, as well as new adaptations of lesser-known optical illusions.
www.archimedes-lab.org /newsletter.html   (1009 words)

  
 IS IT JUST AN ILLUSION
Apply what you have learned about illusions to create a piece of artwork that uses illusions; or create your own optical illusion….
  In this Web Quest you will learn about some famous optical illusions, view artwork by two artists who are masters at using optical illusions, and have an opportunity to either create your own artwork using optical illusions or find examples which show how optical illusions are used today.
Describe the images you have in mind and tell how the use of illusion may apply.
www.allamakee.k12.ia.us /west/staff/jalden/webquest.htm   (366 words)

  
 Optical Illusions Etc: free, scary, word & picture optical illusions
Square A is exactly the same shade of grey as square B. mirage is a natural illusion that is an optical phenomenon.
The variation in the apparent size of the Moon (smaller when overhead, larger when near the horizon) is another natural illusion; it is not an optical phenomenon, but rather a cognitive or perceptual illusion.
Optical illusions can naturally happen by specific optical tricks that show particular assumptions in the human perceptual system.
illusionsetc.blogspot.com /2004/05/what-are-optical-illusions.html   (903 words)

  
 Michigan Blind Skiers Association
Optical Illusions the Michigan Blind Skiers Association evolved in the early 1970s from a Chicago based group the "American Blind Skiing Foundation." Optical Illusions (OI) aquaints former skiers (and non-skiers) who became blind or visually impaired with the enjoyable sport of snow skiing by pairing them with a sighted guide.
The project leaders of this organization are members of Optical Illusions and we would like to thank them for all of the information they make available to the visually impaired.
Optical Illusions (OI) skis each Sunday at Pine Knob during the months of January and February.
www.mdscski.org /oi   (371 words)

  
 eye illusion trick
Optical Illusions Optical Illusion Index Scary Optical Illusion Jesus Optical Illusion Illusions...
This is lunar illusion at work: A trick of perception seems to exaggerate the size...
illusion n 1: an erroneous mental representation [syn: semblance] 2: something many people believe that is false; "they have...
www.free-magic.com /illusions/eye-illusion-trick.html   (371 words)

  
 Continuation of my second site ::
This optical illusion looks like the face of a beautiful woman, but it also looks like a cartoon of a man playing some music on his saxaphone.
A great optical illusion project would be to create a similar drawing or painting and see how many faces you can fit into the picture.
This is one of the classic optical illusions, and has been around since the 1800's, when Zollner created it.
www.freewebs.com /abu_princeton3/someillusions.htm   (585 words)

  
 SWAP Op Art Activities
Have the students observe the optical illusion that takes place as you move from the left side of the folded paper to the right side of the folded paper.
The artist Yaacov Agam developed a technique of Kinetic/Optical painting in the early 1960's, in which a transformable optical illusion is created by the movement of the viewer.
Mondrian played with illusion in some of hie paintings, especially the later ones such as Broadway Boogie-Woogie, and Josef Albers explored both perspective vision in his black and white drawings and engravings and color relationships in his series Homage to the Square.
www.sma.shs.nebo.edu /swap/oapopacts.html   (6581 words)

  
 Optical Illusions Etc... - Word & picture illusions, real, imagined, some scary and all free!
These Optical Illusions are presented on this blog in the spirit of providing an entertaining venue to educate those interested in optical illusions and expanding the traditional assumptions of what constitutes an optical illusion.
The Art of Illusion is a free, open source 3D modeling and rendering studio.
He created this image with the "Art of Illusion" and details some of what he did on this page.
illusionsetc.blogspot.com   (6581 words)

  
 Optical waveguide information and reviews updated daily.
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Whether you are looking for a optical waveguide comparison or in-depth info on optical waveguide, we are your one stop resource!
Try us for the best in optical waveguide, with many suppliers and product categories covering optical waveguide we stand out above the rest.
optical-waveguide.khs.co.uk   (149 words)

  
 visual illusions
free games, puzzle, puzzles, puzzel, puzzels, tangram, optical illusion, optical illusions, visual illusions, pictures, impossible, tessellation, geometric dissection, poser, recreational mathematics, math activities, heuristic, paradox, maze, labyrinth.
Smart games for puzzle fans, teachers, trainers and facilitators: enjoy making and solving puzzles - optical illusions - tessellations - geometric dissections - tangrams - mazes
www.forex-gate.com /visual_illusions   (149 words)

  
 Math Forum Electronic Newsletter
Fair Division Calculator Teaching and Learning about Decimals OPTICAL ILLUSIONS - SandlotScience http://www.sandlotscience.com/ http://www.lainet.com/~ausbourn/ Interactive Java applets and multimedia explorations of optical effects, with animations, art work, stories, and more.
5, No. 9 THE MATH FORUM INTERNET NEWS Optical Illusions - SandlotScience
mathforum.org /electronic.newsletter/mf.intnews5.9.html   (189 words)

  
 Exploratorium: Ten Cool Sites: Miscellaneous
Optical Illusions and Visual Phenomena - Here you'll find some of the Exploratorium's most familiar illusions and many others.
Grand Illusion - "Optical illusions, scientific toys, visual effects, and even a little magic" make this site well worth the visit.
Lightness Demonstrations - Interactive exhibits that elucidate why optical illusions related to lightness perception work.
www.exploritorium.com /learning_studio/cool/miscellaneous.html   (189 words)

  
 Moon Illusion, Carl Wenning, IPS Planetarian
One optical illusion that holds an interest for me is the kind that uses background objects, lines, or other features to alter the appearance of foreground objects.
If you have ever gone to a science center which has a display of optical illusions, you might have watched people spending large amounts of time staring at and attempting to understand why they were perceiving the illusions that they were.
There is one special illusion that has held my interest since childhood, and that is the illusion of the apparent increased size of the moon when seen near the horizon.
griffithobs.org /IPSMoonIllus.html   (1446 words)

  
 Optical Illusions Etc: free, scary, word & picture optical illusions
These Optical Illusions are presented on this blog in the spirit of providing an entertaining venue to educate those interested in optical illusions and expanding the traditional assumptions of what constitutes an optical illusion.
This optical illusion is a before-image illusion, you stare at it and while you are staring you start to see what came before that left this image.
Here is an excellent optical illusion photograph taken by Alain db of the Konica Minolta Users group on PBase.
illusionsetc.blogspot.com   (1015 words)

  
 Beakman & Jax - Illusions
The optical illusion you see the most is probably television.
Our brains cause optical illusions in both ways.
Your mind filling in what it expects to see is one way illusions work.
www.beakman.com /illusion/illusions.html   (289 words)

  
 Eluzions' Optical Illusions
Optical illusions were exploited in optical art, and by artists such as Escher and Dali.
The variation in the apparent size of the Moon (larger when near the horizon) is an example of a natural illusion that is an optical phenomenon.
Contains the best optical illusions, illustrating a wide range of visual anomalies and surprising optical effects.
eluzions.com /Illusions   (289 words)

  
 Optical Illusions and Visual Phenomena
Stereokinetic Phenomenon – an optical illusion of 3D from motion (aka »kinetic depth effect«)
»Optical illusion« sounds pejorative, as if exposing a malfunction of the visual system.
Note: most of the demonstrations require the free players for Apple’s Quicktime (4 or higher) and Macromedia’s Flash (6 or higher), both available for several platforms; some graphics are in PNG format.
www.michaelbach.de /ot   (289 words)

  
 Illusion - Wikipedia, the free encyclopedia
Optical illusions, such the use of false perspective, exploit assumptions made by the human visual system.
Touch illusions exploit the human sense of touch.
An illusion is a distortion of a sensory perception.
en.wikipedia.org /wiki/Illusion   (263 words)

  
 Grid illusion - Wikipedia, the free encyclopedia
The Scintillating grid illusion is an optical illusion when dots seem to appear and disappear at the intersections of two lines crossing each other vertically and diagonally.
The effect of the optical illusion is explained by a neural process called lateral inhibition.
Like the Scintillating grid illusion, when looking at a grid of black squares on a white (or light-colored) background, one will have the impression that there are "ghostlike" grey blobs at the intersections of the white lines.
en.wikipedia.org /wiki/Grid_illusion   (450 words)

  
 Category:Optical illusions - Wikipedia, the free encyclopedia
An optical illusion is any illusion that deceives the human visual system into perceiving something that is not present or incorrectly perceiving what is present.
For more information, see the article on optical illusions.
en.wikipedia.org /wiki/Category:Optical_illusions   (88 words)

  
 Gallery Tour - Dr Michael Brook
For this reason, isometric perspective is the basis of a class of optical illusions.
In one such illusion, as the viewer stares at a figure, it seems to be alternately the outside and then the inside of a cube.
This is different from linear perspective, in which edges that recede from the viewer are drawn shorter to simulate the optical effect of things looking smaller in the distance.
www.math.udel.edu /~mbrook/brookart/brook.html   (988 words)

  
 Op Art - In Brief
Op Art refers to the (normally abstract) style of painting that explores and exploits optical illusions of depth and movement, isometric perspective, the nature of perception, positive and negative space, rhythmic recursive patterns, and the physical and psychological effects of color.
With the onset of computers, many of the optical illusions the created by the Op artists are now extremely easy to recreate; unfortunately, this has led to the public’s devaluing of the original, highly creative Op Art.
In the fifteenth century, artists began to use linear and atmospheric perspective to convey an illusion of depth in their art; artists in the 18th century perfected this technique, essentially perfecting the techniques of Representationalism.
www.brown.edu /Courses/CG11/Group065/op_art_in_brief.html   (332 words)

  
 Illusion - MindSharer Article Archive
Optical illusions, such the use of false perspective, exploit assumptions made by the human visual system.
Mirages are optical distortions through the atmosphere that may be photographed.
An illusion is a distortion of a sensory perception.
articles.mindsharer.com /html/Illusion   (236 words)

  
 UFO Sighting Report January 7th 2005 : Hermosillo Coast near Puerto Libertad, Mexico
The conclusion reached by astronomers and ophtalmologists is that it is an “optical illusion” caused by ambient temperature, the distance between the observer and the object, the angle of incidence of light and the intensity of the light itself.
Theories-a.) An optical illusion created by the camera, although heat and humidity conditions were not the correct ones at the time; b.) A meteor crashed into the hill and shattered it.
These optical illusions can be seen from diferent directions,” he stressed.
www.ufoinfo.com /sightings/mexico/050107.shtml   (795 words)

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