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Schroeder stairs can be perceived in two ways, depending on whether the viewer considers A or B to be the closer wall. Schroeder stairs (Schröder's stairs) is an optical illusion which is a two-dimensional drawing which may be perceived either as a drawing of a staircase leading from left to right downwards or the same staircase only turned upside down, a classical example of perspective ...
In 1685–1686, Johannes Zahn was an early advocate for use of the device for educational purposes: detailed anatomical illustrations were difficult to draw on a chalkboard, but could easily be copied onto glass or mica. [15] 1737 etching/engraving of an organ grinder with a magic lantern on her back by Anne Claude de Caylus (after Edme Bouchardon)
Relativity is a lithograph print by the Dutch artist M. C. Escher, first printed in December 1953.The first version of this work was a woodcut made earlier that same year. [1]
The stacked digit arrangement in a Nixie tube is visible in this (stripped) ZM1210. The most common form of Nixie tube has ten cathodes in the shapes of the numerals 0 to 9 (and occasionally a decimal point or two), but there are also types that show various letters, signs and symbols.
Pablo Picasso's 1912 drawing The Fiddler was upside down at the Reina Sofía Museum of Madrid. The representations of the head and the fiddle were confused. [8] The portrait of Philip V. Josep Amorós's portrait of Philip V of Spain hangs upside down at the Almodí of Xàtiva [Wikidata], Spain.
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A camera obscura (pl. camerae obscurae or camera obscuras; from Latin camera obscūra 'dark chamber') [1] is the natural phenomenon in which the rays of light passing through a small hole into a dark space form an image where they strike a surface, resulting in an inverted (upside down) and reversed (left to right) projection of the view outside.
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