Examlex
The probability distribution of a random variable that is defined to be the number of successes obtained in a random sample selected without replacement from a finite population of N elements that contains r successes and N − r failures is
Rods
Photoreceptor cells in the retina of the eye that are responsible for vision at low light levels.
Night Vision
The ability to see in low light conditions, either naturally through biological adaptations or through the use of technological aids.
Fovea
A tiny pit located in the macula of the retina that is responsible for sharp central vision.
Opsin
A group of protein molecules found in photoreceptor cells of the retina that play a crucial role in the phototransduction cascade of vision.
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