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| the perceived highness or lowness of a sound, depending on the frequency of sound waves |
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| any sound consisting of waves with frequencies higher than 20 000 Hz |
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| any sound consisting of waves with frequencies lower than 20 Hz |
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| an effect in which the vibration of one object causes the vibration of another object at a natural frequency |
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| a system that uses reflected sound waves to determine the distance to, and location of, objects |
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| the rate at which light or any other form of energy flows through a given area of space |
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| a system that uses reflected radio waves to determine the distance to, and location of, objects |
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| a model of light that represents light traveling through space in an imaginary straight line |
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| an image that forms at a point from which light rays appear to come but do not actually come |
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| an image of an object formed by many light rays coming together in a specific location |
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| total internal reflection |
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Definition
| the complete reflection of light at the boundary between two transparent mediums when the angle of incidence exceeds the critical angle |
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| a transparent object that refracts light rays, causing them to converge or diverge to create an image |
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a change in the size of an image compared with the size of an object |
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a transparent block with a triangular cross section |
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an effect in which white light separates into its component colors |
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