'(<a href="http://www.j-archive.com/media/2007-01-31_DJ_15.wmv">Jon of the Clue Crew blows across the top of an empty glass beverage bottle.</a>)  The air inside the bottle vibrates like a spring in the Helmholtz's type of this; it's the intensification of sound by vibration'
resonance
A STUDY IN SOUND: The air inside the bottle vibrates like a spring in the Helmholtzs type of this; its the intensification of sound by vibration
The air inside the bottle vibrates like a spring in the Helmholtz's type of this; it's the intensification of sound by vibration
The air inside the bottle vibrates like a spring in the Helmholtz's type of this; it's the intensification of sound by vibration
A STUDY IN SOUND
resonance
A STUDY IN SOUND