Examlex
The most accurate radiometric dates are obtained from ____________________ rocks. Only in very unusual circumstances can ____________________ rocks be radiometrically dated.
Blind Spot
An area of the visual field that lacks detection due to the absence of photoreceptor cells in the part of the retina where the optic nerve exits the eye.
Optic Nerve
Twin nerves that convey sight-related information from the retina to the brain.
Retina
A layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass via the optic nerve to the brain.
Wavelength
The distance between two consecutive crests or troughs in a wave, typically used in the context of electromagnetic waves such as light, sound, and radio.
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