Does Wave Refraction Change Wave Direction or Alignment

AI Thread Summary
The discussion centers on the relationship between wave direction and alignment as waves approach the shore. It is clarified that as waves enter shallower water, their speed decreases, causing the wave crests to align parallel to the shoreline. This alignment directly correlates with the wave's direction, meaning that the direction of wave travel is not independent of its alignment. The analogy of light passing through a medium, such as glass, is used to illustrate that the wave's energy flows perpendicularly to its crest, reinforcing that the wave's alignment and direction are inherently linked.
Tom MS
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I can't seem to find anything online that talks about this distinction. I understand how when the water gets shallower that part of the wave gets slowed down so the overall alignment parallels with the shore. However, I wouldn't think that would change the actual direction of the wave. I need a detailed explanation on why I'm probably wrong.
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Tom MS said:
I can't seem to find anything online that talks about this distinction. I understand how when the water gets shallower that part of the wave gets slowed down so the overall alignment parallels with the shore. However, I wouldn't think that would change the actual direction of the wave. I need a detailed explanation on why I'm probably wrong.
1204.jpg
The energy is flowing at right angles to the alignment. In this respect, your diagram is incorrect on the sides of the promontory.
 
The alignment and the direction of the wave are the same thing.

It is identical to light going through a medium like glass.
 
mfb said:
The alignment and the direction of the wave are the same thing.

It is identical to light going through a medium like glass.
I was talking about the alignment of the crest relative to the shore and the direction that the wave form traveled.
 
Yes, and they are the same thing. Waves travel orthogonal to their crests/wavefronts.
 
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