American conservatism is a broad system of political beliefs in the United States that is characterized by respect for American traditions, support for Judeo-Christian values, economic liberalism, anti-communism, and a defense of Western culture.
The ear consists of three basic parts-the outer ear, the middle ear, and the inner ear. Each part of the ear serves a specific purpose in the task of detecting and interpreting sound. The outer ear serves to collect and channel sound to the middle ear. The middle ear serves to transform the energy of a sound wave into the internal vibrations of the bone structure of the middle ear and ultimately transform these vibrations into a compressional wave in the inner ear.
Catching Sound Waves. We saw in the last section that sound travels through the air as vibrations in air pressure. To hear sound, your ear has to do three basic things: 1  Direct the sound waves into the hearing part of the ear.2  Sense the fluctuations in air pressure. 3  Translate these fluctuations into an electrical signal that your brain can understand.e saw in the last section that sound travels through the air as vibrations in air pressure. To hear sound, your ear has to do three basic things: 1  Direct the sound waves into the hearing part of the ear.