Organ Pipes: Wave Reflection Explained

  • Thread starter Thread starter sadhu
  • Start date Start date
  • Tags Tags
    Pipes
AI Thread Summary
Sound waves in an open tube reflect due to boundary conditions at the ends of the tube. In an open pipe, the pressure wave must equal zero at the open end, leading to a standing wave described by the sine function. Conversely, in a closed pipe, the pressure gradient is zero at the closed end, resulting in a standing wave described by the cosine function. These conditions create specific wave patterns that facilitate reflection, even in the absence of a physical reflecting medium. Understanding these principles is essential for analyzing sound wave behavior in different types of tubes.
sadhu
Messages
155
Reaction score
0
I want to know that what exactly causes the wave to get reflected in an open tube when there is nothing sort of a reflecting medium.
 
Physics news on Phys.org
The sound wave is really a pressure wave, with standing waves of the form
p=cos kx or sin kx. The boundary condition at the x=0 end of an open pipe is that p=0,
giving sin kx. At the x=0 end of a closed pipe, the BC is dp/dx=0 (or p is a maximum),
gilving cos kx.
 

Thread 'Why can't Solar panels be hemispherical, or a curved strip type?'

comparing a flat solar panel of area 2π r² and a hemisphere of the same area, the hemispherical solar panel would only occupy the area π r² of while the flat panel would occupy an entire 2π r² of land. wouldn't the hemispherical version have the same area of panel exposed to the sun, occupy less land space and can therefore increase the number of panels one land can have fitted? this would increase the power output proportionally as well. when I searched it up I wasn't satisfied with...
View full post »

Similar threads

I Are 1D Longitudinal Waves Reflected at an Open End?
Replies
11
Views
1K
Reflection of sound wave in an open organ pipe
Replies
4
Views
2K
B Are Beats and Standing Waves Related in Physics?
Replies
3
Views
2K
I Solution to the 1D wave equation for a finite length plane wave tube
Replies
7
Views
2K
A Structural coloration of a zeolite monolayer
Replies
7
Views
2K
Misc. Modeling Pressure in a Sound Wave Instrument with External Force
Replies
9
Views
2K
Open End: Definition, Explanation & Equations
Replies
1
Views
3K
What's so special about resonant Frequencies?
Replies
10
Views
2K
B Solving Confusion with Waves in Physics
Replies
3
Views
2K
Reflection and Transmission of String Waves
Replies
8
Views
1K

Hot Threads

Recent Insights

Back
Top