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17 Cards in this Set
- Front
- Back
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Ray Model of Light
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light may be represented by straight line along direction of motion
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Luminous Object
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object that emits light, as opposed to one that reflects light.
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Illuminated Object
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object which light falls.
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opaque
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material does not transmit light.
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transparent
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material transmitting light without distorting directions of waves.
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Translucent
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material transmitting light without distorting wave but destorting its path.
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focal point
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location at which rays parallel to the optical axis of an ideal mirror or lens converge to a point.
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Focal Length
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distance from the focal point to the center of a lens or vertex of a mirror.
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Specular reflection
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Mirror like reflection of light, produced by a smooth surface in which a parallel light rays are reflecting in parallel.
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Diffuse reflection
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a scattered, fuzzy reflection produced by a rough surface.
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plane mirror
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flat, smooth surface that reflects light regularly.
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object
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source of diverging light rays; either luminous or illuminated.
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image
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reproduction of object formed with lenses or mirrors.
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Principal Axis
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line connecting center of curvature of spherical mirror with its geometric vertex. Line perpendicular to plane of lens passing through its center.
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Virtual Image
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point from which light rays appear to diverge without actually doing so.
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Real Image
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optical image at which rays from object converge.
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Magnification
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: ratio of size of an optical image to the size of the object.
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