Organ Pipes/Vibrating Columns of Air

Large pan flute

Concept Overview:

1. Pitch/frequency varies with tube length

2. Pitch/frequency varies between open-pipe and closed-pipe tubes of the same length

Lecturer Procedure

Step(s) to Follow	Expected Result
Blow into the different tubes	Note the differences in frequency
As you are blowing into one tube, cover the end with your hand.	Note the difference in frequency that occurs by changing it to a closed pipe