The Effect Of Purkyne

The phenomenon of changing the color perception by the human eye at lower light objects. The red color in the dusk seem darker than green, and at night — almost black, while blue objects "become" lighter. The Purkinje effect is caused by higher sensitivity of cones in the retina of the eye to yellow light, while rods are more sensitive to blue light, but the sticks are unable to provide color vision. In low light, when the cones enough light for the functioning, the person "sees" the sticks, but in black and white. Due to this effect people can perceive things not as they used to. For example, the picture shows a flower that is visible in the normal bright light, dusk, and night.

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