in 3 to 5 sentences, explain how ears detect sound and how eyes detect light
The ears detect sound through a complex process. Sound waves enter the outer ear and travel through the ear canal, causing the eardrum to vibrate. These vibrations are transmitted to three tiny bones in the middle ear called the ossicles, which amplify and transfer the sound to the cochlea in the inner ear. The cochlea contains hair cells that convert the vibrations into electrical signals, which are then sent to the brain through the auditory nerve.
On the other hand, the eyes detect light through a process called vision. Light enters the eye through the cornea, which bends and focuses it. It then passes through the pupil, the circular opening in the center of the iris, and reaches the lens. The lens further focuses the light onto the retina, which is lined with light-sensitive cells called photoreceptors. These cells convert light energy into electrical signals, which are then transmitted to the brain through the optic nerve for interpretation, ultimately resulting in visual perception.