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Essmyer Ch.25 Vocab
|an oscillation, or repeating back and forth motion, about an equilibrium position.
|a disturbance that repeats regularly in space and time and that is transmitted progressively from one place to the next with no actual transport of matter.
|the time required for a pendulum to make one to and fro swing (single cycle).
|the back and forth vibratory motion of a swinging pendulum.
|simple harmonic motion
|a curse whose shape represents the crests and troughs of a wave, as traced out by a swinging pendulum that drops a trail of sand over a moving conveyor belt.
|one of the places in a wave where the wave is highest or the disturbance is greatest.
|one of the places in a wave where the wave is lowest, or the disturbance is greatest, in the opposite direction from a crest.
|the distance from the midpoint to the maximum (crest) of a wave or, equivalently, from the midpoint to the minimum (trough).
|the distance from the top of the crest of a wave to the top of the following crest, or equivalently, the distance between successive identical parts of the wave.
|the number of events per time; measured in hertz (or events per time). Inverse of period.
|the SI unit of frequency. One Hz is one cycle per second.
|a wave with a vibration at right angles to the direction the wave is traveling.
|a wave in which the vibratio is in the same direction as that in which the wave is traveling, rather than at right angles to it.
|a pattern formed by the overlapping of two or more waves that arrive in a region at the same time.
|addition of two or more waves when wave crests overlap to produce a resulting wave of increased amplitude.
|combination of waves where crests of one wave overlap troughs of another, resulting in a wave of decreased amplitude.
|term applied to two waves for which the crest of one wave arrives at a point at the same time that a trough of he second wave arrives. Their effects cancel each other.
|out of phase
|term applied to two or more waves whose crest and troughs arrive at a lace at the same time, so that their effects reinforce each other.
|wave in which parts of the wave remain stationary and the wave appears not to be traveling. The result of interference between an incident wave and a reflected wave.
|any part of a standing wave that remains stationary.
|the positions on a standing wave where the largest amplitudes occur.
|the apparent change in frequency of a wave due to the motion of the source or of the receiver.
|an increase in the measured frequency of light from an approaching source; called this because the apparent increase is toward the high frequency, or blue, end of the color spectrum. also occurs when an observer approaches a source.
|a decrease in the measured frequency of light or other radiation from a receding source; called this because the decrease is toward the low frequency, or red end of the color spectrum.
|the V-shaped wave produced by an object moving on a liquid surface faster then wave speed.
|a cone shaped wave produced by an object moving at supersonic speed through a fluid.
|the sharp crack heard when the shock wave that sweeps behind a supersonic aircraft reaches the listener.