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measure its speed of movement
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works by pulsing a tight beam of light against the rotating element
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in a technical conext means changing shape
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measure its speed of movement
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acts on a structure from two opposite directions, which may cause it to split
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measures the speed at which a mechanical device rotates
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measures altitude, or height above sea level
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measures the pressure of air in the atmosphere
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exert shear force when they cut something
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measures the number of rotations of a cycle wheel
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are used in crash-test dummies to measure what happends to body parts during a crash
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is a type of transducer, a device that converts one type of energy to another for measurement or information transfer