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  2. Chromostereopsis - Wikipedia

    en.wikipedia.org/wiki/Chromostereopsis

    Blue–red contrast demonstrating depth perception effects 3 Layers of depths "Rivers, Valleys & Mountains". 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.

  3. Underwater vision - Wikipedia

    en.wikipedia.org/wiki/Underwater_vision

    Scuba diver with bifocal lenses fitted to a mask. Underwater vision is the ability to see objects underwater, and this is significantly affected by several factors.. Underwater, objects are less visible because of lower levels of natural illumination caused by rapid attenuation of light with distance passed through

  4. Low-dispersion glass - Wikipedia

    en.wikipedia.org/wiki/Low-dispersion_glass

    Comparison of visible wavelength dispersion (i.e., the distance between foci for blue and red) of crown and flint glass converging lenses. Low-dispersion glass (LD glass) is a type of glass with reduced chromatic aberration, meaning the refractive index does not change as strongly with different wavelengths of light.

  5. Depth perception - Wikipedia

    en.wikipedia.org/wiki/Depth_perception

    The color of distant objects is also shifted toward the blue end of the spectrum (for example, distant mountains). Some painters, notably Cézanne , employ "warm" pigments (red, yellow and orange) to bring features forward towards the viewer, and "cool" ones (blue, violet, and blue-green) to indicate the part of a form that curves away from the ...

  6. Vision in fish - Wikipedia

    en.wikipedia.org/wiki/Vision_in_fish

    Shorter wavelengths penetrate further, with blue and green light reaching the deepest depths. [6] This is why things appear blue underwater: how colours are perceived by the eye depends on the wavelengths of light that are received by the eye. An object appears red to the eye because it reflects red light and absorbs other colours.

  7. What colors can cats see? Here's how your pet perceives the ...

    www.aol.com/colors-cats-see-heres-pet-110109011.html

    From velvety purples to fiery reds, many people can see a spectrum of vivid colors via the human eye. Others, however, may have limited hue perception due to certain conditions.. Animals, on the ...

  8. It's hard to know why so many serial killers from the '70s and '80s wore glasses, but the common thread could partially be attributed to the fact that glasses obscure a portion of the face, as a ...

  9. Glass coloring and color marking - Wikipedia

    en.wikipedia.org/wiki/Glass_coloring_and_color...

    In borosilicate glasses rich in boron, sulfur imparts a blue color. With calcium it yields a deep yellow color. [4] Manganese can be added in small amounts to remove the green tint given by iron, or in higher concentrations to give glass an amethyst color. Manganese is one of the oldest glass additives, and purple manganese glass was used since ...