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Homer sharpens a rock and uses it to shave.Schick adds a handle to the rock for better grip.Gillette then changes the rock to a titanium blade for durability.The progression of improvements made to the shaving utensil is an example of
Audio Equipment
Devices used for the recording, amplification, mixing, and reproduction of sound.
Middle Ear Infections
Infections occurring in the air-filled space behind the eardrum that contain tiny vibrating bones, often resulting in pain, fever, and hearing difficulties.
Sound Waves Transmission
The process by which sound is conveyed through mediums such as air, water, or solid objects by the vibration of particles.
Tympanometry
A diagnostic test that measures the movement of the eardrum in response to changes in air pressure, helping assess middle ear function.
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