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sine curve

the waveform traced by simple harmonic motion, which can be made visible on a moving conveyor belt by a pendulum swinging at right angles above the moving belt


for a wave or vibration, the maximum displacement on either side of the equilibrium (midpoint) position


the distance between successive crests, troughs, or identical parts of a wave


for a vibrating body of medium, the number of vibrations per unit time; for a wave, the number of crests that pass a particular point per unit time


SI unit of frequency


the time in which a vibration is completed

wave speed

the speed at which waves pass a particular point

transverse wave

a wave in which the medium vibrated in a direction perpendicular to the direction in which the wave travels

longitudinal wave

a wave in which the medium vibrates in a direction parallel to the direction in which the wave travels

wave interference

phenomenon that occurs when two waves meet while traveling along the same medium

interference pattern

the pattern formed by the superposition of different sets of waves the produces reinforcement in some places and cancellation of others

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