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Wave Behavior Notes

Wave Behavior Notes. Reflection. Reflection involves a change in direction of waves when they bounce off a barrier. Refraction. R efraction of waves involves a change in the direction of waves as they pass from one medium to another. Diffraction.

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Wave Behavior Notes

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  1. Wave Behavior Notes

  2. Reflection • Reflection involves a change in direction of waves when they bounce off a barrier.

  3. Refraction • Refraction of waves involves a change in the direction of waves as they pass from one medium to another.

  4. Diffraction • Diffraction involves a change in direction of waves as they pass through an opening or around a barrier in their path.

  5. Interference • Wave interference is the phenomenon that occurs when two waves meet while traveling along the same medium.

  6. Constructive interference • Constructive interference is a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the same direction.

  7. Destructive interference • Destructive interference is a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction.

  8. After Interference • The meeting of two waves along a medium does not alter the individual waves or even deviate them from their path. • When the two waves will meet, they produce a net resulting shape of the medium, and then continue on doing what they were doing before the interference.

  9. Principle of Superposition • When two waves interfere, the resulting displacement of the medium at any location is the algebraic sum of the displacements of the individual waves at that same location.

  10. Traveling Waves vs. Standing Waves • Traveling waves are observed when a wave is not confined to a given space along the medium. • When the proper frequency is used, the interference of the incident wave and the reflected wave occur in such a manner that there are specific points along the medium that appear to be standing still. Because the observed wave pattern is characterized by points that appear to be standing still, the pattern is often called a standing wave pattern.

  11. Standing Wave • The waves are interfering in such a manner that there are points of no displacement produced at the same positions along the medium. These points along the medium are known as nodes. • There are also points along the medium that vibrate back and forth between points of large positive displacement and points of large negative displacement. These points are known as antinodes.

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