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Older Adults' and Professionals' Attitudes Towards Stair-Fall Prevention Interventions. [PDF]

open access: yesHealthcare (Basel)
Mulliner E   +4 more
europepmc   +1 more source

Perception of optical illusions in ungulates: insights from goats, sheep, guanacos and llamas. [PDF]

open access: yesAnim Cogn
Berardo C   +6 more
europepmc   +1 more source
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Illusion optics

Frontiers of Physics in China, 2010
The technique of "transformation optics" establishes a correspondence between coordinate transformation and material constitutive parameters. Most of the transformation optics mappings give metamaterials that have graded positive refractive indices that can steer light in curves defined by the coordinate transformation.
Lai, Yun   +4 more
openaire   +2 more sources

An Optical Illusion

Nature, 1914
I HAVE often noticed the phenomenon mentioned by Mr. J. W. Giltay in NATURE of April 23 (p. 189). In the position in which he was reading the sunlight passed through his eyelids and the coats of his eyes, and on account of having to pass through a layer of blood which acted as a red screen his retinas become flooded with red light.
openaire   +1 more source

A New Optical-Geometrical Illusion

Perception, 2007
We describe and attempt to explain a new and unusual optical-geometrical illusion with three levels of distortion. The illusory figure is made up of three juxtaposed bands of the same width, which, when appropriately juxtaposed, appear to be of different widths. We hypothesised that the effect would depend on the combined action of various factors: (i)
BRESSANELLI, Daniela   +1 more
openaire   +3 more sources

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