PURPOSE: To demonstrate the resonance behavior of open and closed tubes.
DESCRIPTION: A tube is excited by an oscillator driving a small loudspeaker. The sound is picked up by a sound probe adjacent to the driven end of the tube, and displayed on the oscilloscope. Resonances are clearly observable on the oscillosco pe. The closed tube is obtained by placing a cap on the left end of the open tube shown in the photograph.
REFERENCES: (PIRA unknown)
EQUIPMENT: Open and closed tubes, loudspeaker, and sound probe mounted on optical rail, mic amplifier, oscillator, oscilloscope.
SETUP TIME: 10 min.
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