![]() When a wave reaches the boundary between one medium another medium, a portion of the wave undergoes reflection and a portion of the wave undergoes transmission across the boundary. In this part of Lesson 3, we will investigate behaviors that have already been discussed in a previous unit and apply them towards the reflection, diffraction, and refraction of sound waves. ![]() ![]() Possible behaviors include reflection off the obstacle, diffraction around the obstacle, and transmission (accompanied by refraction) into the obstacle or new medium. Rather, a sound wave will undergo certain behaviors when it encounters the end of the medium or an obstacle. Like any wave, a sound wave doesn't just stop when it reaches the end of the medium or when it encounters an obstacle in its path.
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