| C | H | A | P | T | E | R 17 |
| The principle of Linear Superposition and Interference Phenomena |

Virtually all musical instruments, including the so-called “bottle flute” in this photograph, produce their sound in a way that involves the principle of linear superposition. All of the topics discussed here are related to this principle. (Aaron Lindberg/Lawrence Journal-World/©AP/Wide World Photos)

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