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Emission theory (vision) Illustration from System der visuellen Wahrnehmung beim Menschen (1687) depicting emission theory. Emission theory or extramission theory (variants: extromission) or extromissionism is the proposal that visual perception is accomplished by eye beams emitted by the eyes. This theory has been replaced by intromission ...
Fixation disparity. Fixation disparity is a tendency of the eyes to drift in the direction of the heterophoria. While the heterophoria refers to a fusion-free vergence state, the fixation disparity refers to a small misalignment of the visual axes when both eyes are open in an observer with normal fusion and binocular vision. [1]
In optics, chromatic aberration ( CA ), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point. [1] It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light. The refractive index of most transparent materials decreases with increasing ...
Prism is the fourth studio album by American singer Katy Perry. It was released by Capitol Records on October 18, 2013. While the album was initially planned to be "darker" than her previous material, Prism ultimately became a prominently dance-inspired record. Perry worked with several past collaborators, while enlisting new producers and ...
Prism spectrometer. A prism spectrometer is an optical spectrometer which uses a dispersive prism as its dispersive element. The prism refracts light into its different colors ( wavelengths ). The dispersion occurs because the angle of refraction is dependent on the refractive index of the prism's material, which in turn is slightly dependent ...
Visual tilt effects. Due to the effect of a spatial context or temporal context, the perceived orientation of a test line or grating pattern can appear tilted away from its physical orientation. The tilt illusion (TI) [1] is the phenomenon that the perceived orientation of a test line or grating is altered by the presence of surrounding lines ...
Prisma is a photo-editing mobile application that uses neural networks and artificial intelligence to apply artistic effects to transform images. The app was created by Alexey Moiseenkov (Russian: Алексей Моисеенков), Oleg Poyaganov, Ilya Frolov, Andrey Usoltsev, and Aram Hardy. It was launched in June 2016 as a free mobile app.
A. Aberrations of the eye. Accommodation (vertebrate eye) Accommodative infacility. Adaptation (eye) Aerial perspective. Afterimage. Astigmatism. Autokinetic effect.