PURPOSE: To illustrate how an organ pipe works.

DESCRIPTION: The pipe can be activated by blowing in the end tube, and the pitch varied by sliding the "closed" end in and out. The end of the shorter tube is open, so it produces a fixed pitch.

SUGGESTIONS:

REFERENCES: (PIRA 3D32.10) See Demonstration Reference File for information about the theory of organ pipes.

EQUIPMENT: Organ pipe.

SETUP TIME: None.