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Purkinje effect - Wikipedia

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The Purkinje effect or Purkinje phenomenon (Czech: [ˈpurkɪɲɛ] ⓘ; sometimes called the Purkinje shift, often mispronounced /pərˈkɪndʒi/)[1] is the tendency for the peak luminance sensitivity of the eye to shift toward the blue end of the color spectrum at low illumination levels as part of dark adaptation.[2][3][page needed] In consequence, reds will appear darker relative to other colors as light levels decrease.[4] The effect is named after the Czech anatomist Jan Evangelista Purkyně. While the effect is often described from the perspective of the human eye, it is well established in a number of animals under the same name to describe the general shifting of spectral sensitivity due to pooling of rod and cone output signals as a part of dark/light adaptation.[5][6][7][8] This effect introduces a difference in color contrast under different levels of illumination. For instance, in bright sunlight, geranium flowers appear bright red against the dull green of their leaves, or adjacent bl

Purkinje effect - Wikipedia Purkinje effect From Wikipedia, the free encyclopedia Jump to navigation Jump to search Tendency for sight to shift toward blue colors at low light levels An animated sequence of simulated appearances of a red flower (of a zonal geranium ) and background foliage under photopic , mesopic , and scotopic conditions The Purkinje effect or Purkinje phenomenon , sometimes called the Purkinje shift (often pronounced / p ər ˈ k ɪ n dʒ i / ), [ 1 ] is the tendency for the peak luminance sensitivity of the eye to shift toward the blue end of the color spectrum at low illumina

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