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I believe you are thinking of what are called Illusion cards. some have tricks of perceptual vision, 3-d overlays, color changes, etc. others work on different colors, perspective and such things as geometric Moire patterns associated with Science Fiction, the video communications screens on Star Trek would dissolve into Moire patterns when not in use- and they were also used in the Time Tunnel , sometimes called infinity patterns. good luck . Edmund Scientific used to sell sets of illusion cards.They probably still do.
What else can I help you with?
What is the collection of pictures called?
A collection of pictures is called a gallery or an album.
Vertex show pictures on the head?
um i ask a question anserw r it that why is called awswer .com
Where can one find pictures of girls in tight skirts?
One can find pictures of girls in tight skirts on a number of sites, some reputable, some not. The reputable ones include a website which is called The Chive.
What do you call pictures of saints?
Pictures of saints are commonly referred to as "icons" or "holy images." In the context of Christianity, particularly in the Eastern Orthodox tradition, icons are religious works of art that depict saints, Christ, and significant events. In other Christian traditions, these images may simply be called "pictures" or "portraits" of saints.
Where can one find pictures of tattoo lettering?
You have two options, you can make contact with local tattoo shops and go meet them in person and see their lettering, or you can do it from home on a website called TattooFinder, it offers pictures of most you will find in any shop.
What are the small pictures that represent various elements in windows called?
Icons represent various elements in Windows.
What is pictures newspaper cuttings called?
Cutting up various publications and gluing them into a new and artistic pattern is called collage.
What is a competition between knights called?
Knight competitions were called tourneys. Various specific aspects of competition had different names, but the most famous was called jousting.
What do you call a photo with 3 or 4 pictures in it from a move or TV scene?
A photo containing three or four pictures from a movie or TV scene is typically referred to as a "collage" or a "mosaic." These arrangements combine multiple images into a single composition to highlight various moments or aspects of the scene. In the context of film or television, it may also be called a "screenshot collage."
Where can one find pictures of wood boats?
Pictures of wood boats can be found or viewed on various places. Some books and magazines print these pictures. A site called Flickr also has these photos posted once in a while.
Where can one find cool cityscape pictures of different major cities?
One can find cityscape pictures from a company called Skyline Scenes. They have a wide array of pictures of various cities. Eazy Wallz also has cityscape pictures designed to decorate walls.
Scientists who study the ocean are called what?
Scientists who study the ocean are called oceanographers. They investigate various aspects of the ocean, such as marine life, currents, and ecosystems.
What are minerals that contain metallic elements called?
Minerals that contain metallic elements are called ores. These ores are valuable natural resources that can be mined for the extraction of the metallic elements they contain, which are often used in various industries such as manufacturing and construction.
What do coral reefs contain?
Reefs contain little animals called "polyps" they create the reefs color, the reef also has a various number of animals like fish!
What are pictures called in french?
pictures are called "des images" in French
What is the collection of pictures called?
A collection of pictures is called a gallery or an album.
What does the Magazine called Front contain?
Front Magazine contains stories on music, film, gadgets and games, fashion, and sports. This magazine also features glamour shoots with models and may contain nude pictures of the models.
