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12 Cards in this Set
- Front
- Back
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electromagnetic wave |
A transverse wave composed of an oscillating electric field and a magnetic field that oscillates perpendicular to the electric field |
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the law of reflection |
The angle of reflection equals the angle of incidence |
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convex lens |
A lens that bends light rays so that they converge into a single (focal) point (also called a converging lens) |
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concave lens |
A lens that bends light rays so that they diverge away from one another (also called a diverging lens) |
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cornea
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A thin, transparent substance that protects the eye from abrasions
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iris
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An adjustable cover that regulates how much light gets into the eye
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pupil
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The opening left by the iris
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rods
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retinal receptors that detect black, white, and gray; necessary for peripheral and twilight vision, when cones don't respond
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cones
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retinal receptor cells that are concentrated near the center of the retina and that function in daylight or in well-lit conditions. They detect fine detail and give rise to color sensations
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retina
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the light-sensitive membrane covering the back wall of the eyeball
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optic nerve
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the cranial nerve that serves the retina
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ciliary muscle
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a muscle that squeezes or expands the lens of your eye in order to focus on an object
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