polarisation....

[hassam]

what is its proper definition and why sound waves cannot be polarised?....i know they are longitudinal but tell me why

 

[diwash]

Polarisation is the process by which the wave oscillations are made to occur in one palne only.Only transverse wave can be ploarised. Sound wave is longlitdunal wave so it cannot be polarised. It is because usually..polarising medium (eg polarider) blockes vibration in all direction except in the direction perpendicular to the polarising medium's atoms..as the oscillation of the sound wave is in the dicretion parallel to the direction of propogation of the wave , there is no vibration of the particles in the direction perpendicular to the wave. therefore for a sound wave travelling into ploarising medium, there is no oscillation n the direction perpendicular to the Polarising medium. and the polarising medium blocks all the waves and no waves comes out of the polarising medium.therefore sound wave(longitudinal wave) cannot be polarised.
Hope it helped

 

[thunderingthunder]

HEy it can also be written as sound waves cannot be polarized because they travel only in one dimension whereas transverse wavesw travel in 2 dimensions....