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SaL 1.3

Interactions of Waves

TermDefinition
reflection The bouncing back of an object or a wave when it hits a surface through which it cannot pass.
refraction The bending of waves as they enter a new medium at an angle, caused by a change in speed.
diffraction The bending or spreading of waves as they move around a barrier or pass through an opening.
interference The interaction between waves that meet.
constructive interference The interference that occurs when two waves combine to make a wave with an amplitude larger than the amplitude of either of the individual waves.
destructive interference The interference that occurs when two waves combine to make a wave with an amplitude smaller than the amplitude of either of the individual waves.
standing wave A wave that appears to stand in one place, even though it is two waves interfering as they pass through each other.
node A point of zero amplitude on a standing wave.
antinode A point of maximum amplitude on a standing wave.
resonance The increase in the amplitude of a vibration that occurs when external vibrations match an object’s natural frequency.
Created by: mgershen
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