Suppose that you have been outdoors in the bright sunlight and go inside to get a drink of water. When you enter your house, you find it a bit difficult to see; everything appears darker than usual. Soon, though, you begin to see better as a result of

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This phenomenon is known as dark adaptation, which is the process by which the eyes increase their sensitivity to low levels of light after being in brighter light. It involves the regeneration of photopigments in the retina, allowing for better vision in dim conditions.

Suppose That You Have Been Outdoors in the Bright Sunlight