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20 Cards in this Set
- Front
- Back
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Pupil |
Opening in the eye that lets light in |
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Aperture |
Hole or opening ub the camera that lets light in |
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Iris |
The band of muscles in the eye that controls the size of the pupil and the amount of light entering the eye |
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Diaphragm |
Part that changes the size of a camera's aperture |
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Shutter |
Part that acts like a door to control the amount of light entering a camera |
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Retina |
Special lining on the back of the eye. When light hits the retina, photoreceptor cells send messages to the brain, which translates them into an image |
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Photoreceptors |
Light sensitive cells found in the retina of the eye; there are two types, cones and rods |
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Cones |
Specialized cells in the retina that detect colour; there are three types of cones, each sensitive to a different colour; red, blue, and green |
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Rods |
Specialized cells in the retina that are sensitive to low levels of light |
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Optic Nerve |
Nerve that leads from the retina to the brain |
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Film |
material that is sensitive to light used in cameras to record images |
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Camera Eyes |
Eyes that are round and have a cornea, a lens, and a retina |
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Nocturnal |
Describes animals that are active at night |
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Compound Eyes |
Eyes that are made of many small units; found in insects and crustaceans |
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Ommatidium |
Unit of a compound eye, has a lens, focussing cone, and light sensitive cell(Plural is Ommatidia) |
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Digital Imaging |
Process of creating an image using a computer |
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Pixels |
Short for Picture Element;individual element of a digital image |
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Resolution |
The number of pixels per unit in a given area in a digital image |
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Charge-Coupled Device |
Device that converts light into electrical energy; used in digital cameras |
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