The most fundamental type of wave motion that propagates in a compressible, nonconducting fluid is that of longitudinal sound waves. For these waves the variations in pressure (p) and in density (ρm), associated with the fluid compressions and rarefactions, obey the adiabatic energy equation commonly used in thermodynamics,
KeywordsPhase Velocity Magnetic Field Line Alfven Wave Magnetosonic Wave Plane Wave Solution
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