Asked in HealthHistory of Science
How do you hear a sound?
May 30, 2013 11:29PM
Sound vibrations hit the eardrum and consequently produce vibrations in the ear-drum, thence the ossicles (tiny bone levers) in the middle-ear that transmit the vibrations onwards to the cochlea.
The cochlea is the transducer, containing fluid that oscillates in the organ in reponse to the imposed vibrations. In turn the fluid's movement excites thousands of minute hair-cells linked to the auditory-nerve bundle that sends the resulting electrical impulses to the brain for processing.