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The scintillating grid illusion is an optical illusion, discovered by E. and B. Lingelbach and M. Schrauf in 1994. [2] It is often considered a variation of the Hermann grid illusion but possesses different properties. [2] [3] It is constructed by superimposing white discs on the intersections of orthogonal gray bars on a black background.
A conformal map acting on a rectangular grid. Note that the orthogonality of the curved grid is retained. While vector operations and physical laws are normally easiest to derive in Cartesian coordinates, non-Cartesian orthogonal coordinates are often used instead for the solution of various problems, especially boundary value problems, such as those arising in field theories of quantum ...
The diagram first appeared in Imagery and Visual Expression in Therapy by Vija B. Lusebrink (1990). [1] The Expressive Therapies Continuum (ETC) is a model of creative functioning [2] used in the field of art therapy that is applicable to creative processes both within and outside of an expressive therapeutic setting. [3]
The line segments AB and CD are orthogonal to each other. In mathematics, orthogonality is the generalization of the geometric notion of perpendicularity.Whereas perpendicular is typically followed by to when relating two lines to one another (e.g., "line A is perpendicular to line B"), [1] orthogonal is commonly used without to (e.g., "orthogonal lines A and B").
Topdog vs. underdog is a phrase coined by Fritz Perls, the father of Gestalt therapy, to describe a self-torture game that people play with themselves in order to avoid the anxiety that they encounter in their environment.
The grid format also features prominently in minimalist and conceptual art of the 60's and 70's. The art theorist Rosalind Krauss writes, "In the temporal dimension, the grid is an emblem of modernity by being just that: the form that is ubiquitous in the art of our century, while appearing nowhere, nowhere at all, in the art of the last one.
Rectilinear polygons are also known as orthogonal polygons. Other terms in use are iso-oriented , axis-aligned , and axis-oriented polygons . These adjectives are less confusing when the polygons of this type are rectangles , and the term axis-aligned rectangle is preferred, although orthogonal rectangle and rectilinear rectangle are in use as ...
But just how pictures function remains controversial. Philosophers, art historians and critics, perceptual psychologists and other researchers in the arts and social sciences have contributed to the debate and many of the most influential contributions have been interdisciplinary. Some key positions are briefly surveyed below.