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Photodarkening is an optical effect observed in the interaction of laser radiation with amorphous media (glasses) in optical fibers. Until now, such creation of color centers was reported only in glass fibers. [1] [2] Photodarkening limits the density of excitations in fiber lasers and amplifiers. The experimental results suggest that operating ...
The equation for the optical Modulation transfer function associated with jitter is M T F j i t t e r ( k ) = e − 1 2 k 2 σ 2 {\displaystyle MTF_{jitter}(k)=e^{-{\frac {1}{2}}k^{2}\sigma ^{2}}} where k is the spatial frequency and σ {\displaystyle \sigma } is the amplitude of the jitter. [ 2 ]
Opalescence or play of color is an optical phenomenon associated with the mineraloid gemstone opal, [1] a hydrated silicon dioxide. [2] This effect appears as a milky, translucent glow that changes with the angle of light, often creating a soft, pearly sheen that can display various colors or hues.
Color photography (also spelled as colour photography in Commonwealth English) is photography that uses media capable of capturing and reproducing colors. By contrast, black-and-white or gray- monochrome photography records only a single channel of luminance (brightness) and uses media capable only of showing shades of gray .
Optical phenomena are any observable events that result from the interaction of light and matter. All optical phenomena coincide with quantum phenomena. [1] Common optical phenomena are often due to the interaction of light from the Sun or Moon with the atmosphere, clouds, water, dust, and other particulates.
Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images. [1] [2] Such illusions have been reported for over a century and have generally been attributed to some form of chromatic ...
In optics, chromatic aberration (CA), also called chromatic distortion, color aberration, color fringing, or purple fringing, is a failure of a lens to focus all colors to the same point. [ 1 ] [ 2 ] It is caused by dispersion : the refractive index of the lens elements varies with the wavelength of light .
Color conversion and light balancing (LB) filters must be distinguished from color correction filters (CC filters), which filter out a particular color cast that may have various causes, including reflections from colored surfaces, fluorescent lighting (which has an unbalanced spectrum), underwater photography, or the Schwarzschild effect (also ...