When waves crash on a beach,
they transmit acoustical-energy in a spring-like motion
through the air that arrives in the ear as sound. The
crashing waves cause air molecules to compress
into neighboring molecules.
This cycle continues
until the sound waves terminate
in the ear or fade away.
In route to the brain, the ear converts compression and
rarefaction of air molecules into neuron discharges.
The compressions/rarefactions enter the pinna
ear's directional encoder. They then proceed into the
, the ear's resonating acoustic
amplifier. At the exit of the auditory canal, the
resonations beat on its membrane-acoustic barrier, the
The resonating 'drum' mechanically links with the bone
structure of the hammer
, and stirrup
of the middle ear's next boundary, the oval window
of the inner ear. All of this mechanical action
activates the fluid sack of the inner ear
, the final
The compression and
rarefactions of the inner ear fluid stimulate hair-like
nerve terminals in the inner ear.
The shifting hair-like nerves of the inner ear generate
neuron discharges that finally convey signals to the brain
that produce sound.
See the waves crash on the beach.
Light transmits energy in a spring-like motion via a sea of
electromagnetic energy into our eyes. For example, the
sun creates electromagnetic energy that compresses
until the energy encounter a surface such
as crashing waves.
A surface, like water, absorbs much of the energy. The
remainder reflects off the surface. The reflected
energy initiates another compression/rarefaction cycle that
continues until it terminates in our eyes as a visible wave
on the beach.
The eye converts electromagnetic light into neuron
discharges. Light enters the window of the eye -- the
cornea and pupil. The light then encounters the
focusing lens of the eye. It directs the light to the
energy transfer point of the eye, the retina. The
retina consist of light-sensitive antennas called cones and
rods. The cones and rods stimulate the optic nerve
that produced neuron discharges to the brain.