Longitudinal sound waves are waves of alternating pressure deviations from the equilibrium pressure, causing local regions of compression and rarefaction, while transverse waves (in solids) are waves of alternating shear stress at right angle to the direction of propagation.
Longitudinal sound waves are waves of alternating pressure deviations from the equilibrium pressure, causing local regions of compression and rarefactionthese waves are also known as mechanical wanes as they need a material medium to travel. While transverse waves (in solids) are waves of alternating shear stress at right angle to the direction of propagation.