Examlex
The specific heat of ice is the amount of heat required to melt a specified weight to liquid water.
Iris
Muscular ring that surrounds the pupil and regulates the passage of light through this opening.
Pupil
Opening in the center of the iris of the vertebrate eye.
Retina
The light-sensitive layer of tissue at the back of the inner eye, which converts light images into electrical signals sent to the brain.
Lens
An optical device capable of converging or diverging light, or a transparent structure in the eye which focuses light onto the retina to facilitate vision.
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