purkinje-effect | space-encyclopedia

Space Travel

23, May, 2012

Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.

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Term	Definition
Purkinje Effect	The change in the colour sensitivity of the human eye that occurs when dark adaption takes place. In daylight, a normal eye detects light in the wavelength range 400-750 nanometres, the peak sensitivity lying in the yellow to green region. Under low levels of illumination, the eye adapts to increase overall sensitivity to light, but is less able to detect the redder end of the spectrum; the peak sensitivity moves further towards the green.

Term

Definition

Purkinje Effect

The change in the colour sensitivity of the human eye that occurs when dark adaption takes place. In daylight, a normal eye detects light in the wavelength range 400-750 nanometres, the peak sensitivity lying in the yellow to green region. Under low levels of illumination, the eye adapts to increase overall sensitivity to light, but is less able to detect the redder end of the spectrum; the peak sensitivity moves further towards the green.