You are Here: Home >< Physics

# Phase difference in Stationary waves watch

1. Why is it that two points in between adjacent nodes will ALWAYS have a phase difference of zero ?

Can someone explain this ?
2. Just look at the animation in my sig below this post.
The 3rd wave is a stationary wave. All points between any two nodes are going up and down together. That is, in phase.
There is one point marked and going up and down. A point right next to it would also be going up and down in phase with it.
As a matter of interest, when you move on to the next loop, the points in that will all be in antiphase with those in the first loop. They go down as the others go up.
3. (Original post by Stonebridge)
Just look at the animation in my sig below this post.
The 3rd wave is a stationary wave. All points between any two nodes are going up and down together. That is, in phase.
There is one point marked and going up and down. A point right next to it would also be going up and down in phase with it.
As a matter of interest, when you move on to the next loop, the points in that will all be in antiphase with those in the first loop. They go down as the others go up.
So the points in every alternate segment (a segment being the the area between two nodes) are in-phase ?
4. (Original post by Ari Ben Canaan)
So the points in every alternate segment (a segment being the the area between two nodes) are in-phase ?
That's correct. Points in adjacent (adjoining) segments are out of phase, and points in alternate (every 2nd) segment are in phase.
The animation shows it far better than I can describe it.

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 14, 2011
Today on TSR

### Results day under a month away

How are you feeling?