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| a medium that transmit light and also can reflect a fraction of the light, allowing objects to be seen clearly through it. |
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| a medium that transmits light and also can reflect a fraction of the light, but does not allow objects to be seen clearly through it |
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| a medium that absorbs light and reflects some light rather than transmitting it, preventing objects from being seen through it |
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| the bending of light around a barrier |
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| red, green, and blue, which can be combined to form white light and mixed in pairs to produce the secondary colors: yellow, cyan, and magenta. |
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| a reflection produced by a smooth surface in which parallel light rays are reflected in parallel. |
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| a scattered, fuzzy reflection produced by a rough surface |
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| a flat, smooth surface from which light is reflected by regular reflection, producing a virtual image that is the same size as the object, has the same orientation, and is the same distance from the mirror as the object |
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| a luminous or illuminated source of light rays that are to be reflected by a mirrored surface |
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| the combination of image points in a plane mirror from which the reflected object seems to originate |
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| a mirror that reflects light from its inwardly curving surface and can produce either an upright, virtual image or an inverted, real image |
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| a mirror that reflects light from its outwardly curving surface and produces an upright, reduced, virtual image. |
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| a straight line perpendicular to the surface of a mirror that divides the mirror in half. |
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| the point where incident light rays that are parallel to the principal axis converge after reflecting from the mirror |
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| the position of the focal pint with respect to the mirror along the principal axis. |
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| the amount that an image is enlarged or reduced in size, relative to the object |
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| for a medium, is the ratio of the speed of light in a vacuum to the speed of light in that medium |
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| the certain angle of incidence in which the refracted light ray lies along the boundary between two media |
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| a piece of transparent material, such as glass or plastic, that is used to focus light and form an image. |
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| a diverging lens, thinner at its middle than its edges, that spreads out light rays passing through when surrounded by material with a lower index of refraction; produces a smaller, virtual, upright image. |
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| a converging lens, thicker at its center than it's edges, that refracts parallel light rays so the rays meet at a point when surrounded by material with a lower index of refraction, can produce smaller, inverted, real image, or a larger, upright, virtual image |
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| a vision defect in which a person cannot see distant objects clearly because images are focused in front of the retina; can be corrected with a concave lens |
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| a vision defect in which a person cannot see close objects clearly because images are focused behind the retina; can be corrected with a convex lens |
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