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The Droste effect (Dutch pronunciation:), known in art as an example of mise en abyme, is the effect of a picture recursively appearing within itself, in a place where a similar picture would realistically be expected to appear. This produces a loop which in theory could go on forever, but in practice only continues as far as the image's ...
The Ternus illusion (1926/1938) is based upon apparent motion. Thaumatrope: A thaumatrope is a toy that was popular in Victorian times. Trompe-l'œil: Troxler's fading: Troxler's fading: When one fixates on a particular point for even a short period of time, an unchanging stimulus away from the fixation point will fade away and disappear ...
The top and bottom images produce a dent or projection depending on whether viewed with cross- () or wall- () eyed vergence. Autostereogram of a cube rotating Autostereogram. An autostereogram is a two-dimensional (2D) image that can create the optical illusion of a three-dimensional (3D) scene.
A Fata Morgana may be described as a very complex superior mirage with more than three distorted erect and inverted images. [1] Because of the constantly changing conditions of the atmosphere, a Fata Morgana may change in various ways within just a few seconds of time, including changing to become a straightforward superior mirage.
Art historians say Leonardo da Vinci hid an optical illusion in the Mona Lisa's face: she doesn't always appear to be smiling. There's question as to whether it was intentional, but new research ...
The most well-known version of this illusion is known as the stopped-clock illusion, wherein a subject's first impression of the second-hand movement of an analog clock, subsequent to one's directed attention (i.e., saccade) to the clock, is the perception of a slower-than-normal second-hand movement rate (the second-hand of the clock may ...
In an example of the Cornsweet illusion, the whole left half of this rectangle seems to be lighter than the right. In fact they have the same brightness, apart from the gradients in the center. The same image as above, but the edge in the middle is hidden: the left and right part of the image appear as the same color.
There are everyday examples of hidden faces, they are "chance images" including faces in the clouds, figures of the Rorschach Test and the Man in the Moon. Leonardo da Vinci wrote about them in his notebook: "If you look at walls that are stained or made of different kinds of stones you can think you see in them certain picturesque views of mountains, rivers, rocks, trees, plains, broad ...