Chapter 5: Analytical solutions Flashcards
1
Q
what is a dispersive medium
A
a medium in which the sound speed depends on the frequency so w=co(w)k
2
Q
dispersion relation?
A
any relationship between spatial and temporal frequencies is called a dispersion relation
3
Q
What is geometric spreading?
A
the energy in the wave will be spread over the surface area of the wave and so the intensity will decrease with distance r from the source.
4
Q
how will the intensity reduce as a function of r for a spherical and cylindrical wave?
A
1/r^2 - spherical
1/r - cylindrical
