Page 172 - A Definitive Reply to Evolutionist Propagand‪a
P. 172

A DEFINITIVE REPLY
                                       TO EVOLUTIONIST
                                         PROPAGANDA


                   As is commonly known, the hearing process begins with vibra-
               tions in the air. These vibrations are enhanced in the external ear by
               about 17 decibels. 1
                   Sound intensified in this way enters the external auditory canal.
               This is the passageway leading from the external ear to the eardrum.
               One interesting feature of the auditory canal, which is some three and
               a half centimeters long, is the wax it constantly secretes. This liquid
               contains an antiseptic property which keeps bacteria and insects out.
               Furthermore, the cells on the surface of the auditory canal are aligned
               in a spiral form directed towards the outside, so that the wax always
               flows towards the outside of the ear as it is secreted.
                   Sound vibrations that pass down the auditory canal in this way
               reach the eardrum. This membrane is so sensitive that it can even
               perceive vibrations on the molecular level. Thanks to the exquisite
               sensitivity of the eardrum, you can easily hear somebody whisper-
               ing from yards away. Another extraordinary feature of the eardrum
               is that after receiving a vibration it returns to its normal state.
               Calculations have revealed that, after perceiving the tiniest vibra-
               tions, the eardrum becomes motionless again within up to four
               thousandths of a second. If it did not become motionless again so
               quickly, every sound we hear would echo in our ears.
                   The eardrum amplifies the vibrations that come to it, and sends
               them on to the middle ear region. Here, there are three bones in an
               extremely sensitive equilibrium with each other. These three bones
               are known as the hammer, the anvil, and the stirrup; their function
               is to amplify the vibrations that reach them from the eardrum.
                   But the middle ear also possesses a kind of "buffer," to reduce
               exceedingly high levels of sound. This feature is provided by two of
               the body's smallest muscles, which control the hammer, anvil, and
               stirrup bones. These muscles enable exceptionally loud noises to be
               reduced before they reach the inner ear. Thanks to this mechanism,
               we hear sounds that are loud enough to shock the system at a re-
               duced volume. These muscles are involuntary, and come into oper-
               ation automatically.




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