Longitudinal wave speed in solids depends only on density and Young’s modulus

Evidence

For longitudinal waves in solids, the speed of propagation is only affected by the density and Young’s modulus of the material, and this can be simply calculated from the following equation: where c = the speed in meters per second (ms−1) ρ = the density of the material (in kg m−3) and E = the Young’s modulus of the material (in N m−2) However, although the density of a solid is independent of the direction of propagation in a solid, the Young’s modulus may not be. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 61

Categorization

• corroborated: 2 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 61