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the study of how light behaves |
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| an imaginary line that represents a thin beam of light |
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| converging lens (convex lens) |
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| bends light so that the light rays come together too point |
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| diverging lens (concaue lens) |
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| bends light so it spreads light apart instead of coming together |
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another optical device (made up of solid piece of glass with flat polished surfaces) |
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| materials that allow light to pass through |
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| this type of reflection is: a ray of light that strikes a shiny surface (like a mirror) creates a single reflected ray |
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A surface that is not shiny creates this A single ray of light scatters into many directions |
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| the light ray that bounces off the mirror |
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| the light ray that strikes the mirror |
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| line between incident and reflected rays an imaginary line that is perpendicular to the surface of the mirror |
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| the angle between the incident ray and the normal line |
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| the angle between the normal line and the reflected ray |
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| the angle of incidence equals the angle of reflection |
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| An accurately drawn sketch showing how light rays interact with mirrors, lenses, and other optical devices |
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| The_____for a material measures the ability of the material to bend light |
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| is the angle between the refracted ray and normal line |
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| Total internal reflection |
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| As the angle of incidence increases, there is a point at which the light will not enter the air but reflect back into water |
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| The angle of incidence at which the angle of refractgion is 90 degrees |
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| Are thin glass fibers and use total internal reflection to carry light, even around bends and corners. |
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| descibes how refractive index varies depending on the color of light |
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| are real physical things that gice off or reflect light rays |
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| are pictures of objects that are formed in space where light rays meet |
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| the image in a mirroris called ____ because the light rays do not actually come together to form the image |
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| an imaginary line that goes throu the center of the lens |
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| Light rays that enter a converging lens parallel to its axis bend to meet at a point called____ |
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| The distance from the center of the lens to the focal point |
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Steps to drawing a ray diagram for converging lens(drawing all 3 together) |
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1. Draw a light ray passing throught the center of the lens 2. Darw a light ray that starts parallel to the axis and bends at the lens to pass thorugh the far focal point 3. Draw a light ray passing thorugh the near focal point. This light ray bends so it is parallel to the axis on the far side of the lens. |
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| a converging lens can form___. in_____ light from each single point on an object comes back together again at a single point in another place to make an image |
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| the place where the light comes back together again |
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of an object is the ratio of the size of the image divided by size of the object |
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| Has two converging lenses with different focal lenghts |
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