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| the complete range of electromagnetic waves placed in order of increasing frequency |
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| vibrating electric and magnetic fields that move through space at the speed of light |
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| transmits most of the light that strikes it |
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| scatters light as it passes through |
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| reflects or absorbs all of the light that strikes it |
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| occurs when an object or wave bounces back off a surface through which it cannot pass |
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| bending of light waves due to a change in speed |
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| A transparent from surface on the eye that protects it. It acts as a lens to help focus light rays |
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Definition
| an opening through which light enters the inside of the eye |
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| a layer of cells that lines the inside of the eyeball |
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| a disturbance that transfers energy from place to place |
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| the material through which a wave travels |
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| a repeated back-and-fourth or up-and-down motion |
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| the maximum distance that the particles of the medium carrying the wave move away from their rest positions |
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| the distance between two corresponding parts of a wave |
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| the number of complete waves that pass a given point in a certain amount of time |
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| units used to measure frequency |
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Term
| electromagnetic radiation |
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Definition
| the energy that is transferred through space by electromagnetic waves |
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Definition
| electromagnetic waves that you can see |
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Definition
| three colors that can combine to make any other color |
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Definition
| two primary colors that combine in equal amounts |
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| any two colors that combine to form white light |
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| colored substances that are used to color other materials |
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| states that the angle of incidence equals the angle of reflection |
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Definition
| a flat sheet of glass that has a smooth, silver-colored coating on one side |
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Definition
| a copy of an object formed by reflected or refracted rays of light |
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| an upright image that forms where light seems to come from |
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Definition
| a mirror with a surface that curves inward like the inside of a bowl |
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| an imaginary line that divides a mirror in half |
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Definition
| the point at which rays parallel to the optical axis meet or converge |
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Definition
| forms when rays actually meet |
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Definition
| a mirror with a surface that curves outward |
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| a curved piece of glass or other transparent material that refracts light |
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Definition
| a magnifying glass that is thicker in the center than at the edges |
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| thinner in the center than at the edges |
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Definition
| a ring of muscle that contracts and expands to change the size of the pupil |
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Definition
| contain a pigment that responds to small amounts of light |
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Definition
| contain a pigment that responds to color |
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| a condition where a person can see nearby things clearly, but objects at a distance are blurred |
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Definition
| a condition where a person can see distant objects clearly, but nearby objects appear blurry |
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Definition
| uses one or more lenses to focus light, and film to record an image |
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Definition
| forms enlarged images of distant objects |
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Definition
| consists of two convex lenses, one at each end of a tube |
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Definition
| gathers the light coming from an object and focuses the rays to form a real image |
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Definition
| magnifies the image so you can see it clearly |
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Definition
| uses a large concave mirror to gather light |
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| an optical tool that makes small objects look larger |
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Definition
| uses a beam of tiny particles called electrons instead of light to produce a magnified image |
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