How Low Can a Pop Bottle Go in Pitch?

In summary, the conversation discusses the theoretical limit of the lowest note achievable in a closed tube, specifically a pop bottle. The person asking the question has provided a diagram of their understanding and is seeking confirmation. The possibility of a limit is considered due to the human ear's limited range of frequencies and the inverse relationship between frequency and wavelength.
  • #1
Numzie
15
0
Is there a theoretical limit to the lowest note achievable in a closed tube(Pop bottle)?

Heres the question in context:
I've got what I believe to be the correct:
http://img141.imageshack.us/img141/9301/1azw1.jpg
^^ May want to check that, if you don't mind ^^
 
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  • #2
I've searched all over for something but can't find anything. From what I can reason there would be a limit for two reasons:
1) Because the human ear can only hear a limited about of frequencies.(I assume this is correct but doesn't really relate to the given situation)
2) Frequency and wavelength are inversely proportional so eventually at a low enough frequency the wavelength will be so great that 1/4 of its wavelength is greater than the length of the tube.
 
  • #3
I can confirm that the concept of closed cylinder resonance does have a theoretical limit to the lowest note achievable in a closed tube, such as a pop bottle. This limit is determined by the length of the tube and the speed of sound in the medium (in this case, the air inside the bottle).

The lowest note achievable in a closed tube is known as the fundamental frequency, and it is directly proportional to the length of the tube. This means that the longer the tube, the lower the fundamental frequency and thus the lower the note that can be produced. However, there is a limit to how long a tube can be before it becomes impractical or impossible to produce a sound.

In the case of a pop bottle, the length of the bottle is relatively short, so the fundamental frequency will also be relatively high. This is why it is difficult to produce very low notes using a pop bottle as a musical instrument.

Additionally, the speed of sound in air is also a limiting factor for the lowest note achievable in a closed tube. The speed of sound is affected by factors such as temperature, humidity, and pressure, but on average it is around 343 meters per second. This means that even if the length of the tube is increased, there will be a point where the frequency of the sound wave produced will be too low for the speed of sound in air, and the sound will not be able to propagate through the tube.

In summary, while there is a theoretical limit to the lowest note achievable in a closed tube, it is also limited by practical and physical factors such as the length of the tube and the speed of sound in the medium. This means that while a pop bottle can produce relatively low notes, there is a limit to how low it can go due to its size and the properties of air.
 

Related to How Low Can a Pop Bottle Go in Pitch?

1. What is closed cylinder resonance?

Closed cylinder resonance is a phenomenon that occurs when a sound wave is trapped inside a cylindrical container, causing it to resonate at a specific frequency.

2. How does closed cylinder resonance work?

Closed cylinder resonance works by trapping sound waves inside a cylindrical container, causing them to bounce back and forth and amplify. This amplification occurs at a specific frequency, known as the resonant frequency.

3. What are some real-life examples of closed cylinder resonance?

Some examples of closed cylinder resonance include musical instruments such as flutes and clarinets, where the sound is produced by the resonance of air inside the instrument. It also occurs in car exhaust pipes and organ pipes.

4. How is closed cylinder resonance different from open cylinder resonance?

Closed and open cylinder resonances are similar in that they both involve trapping sound waves inside a cylinder. However, in closed cylinder resonance, both ends of the cylinder are sealed, while in open cylinder resonance, one end is open. This results in different resonant frequencies and sound characteristics.

5. How is closed cylinder resonance used in research or technology?

Closed cylinder resonance is used in research and technology for various purposes, such as studying the acoustic properties of materials and designing efficient acoustic devices. It is also used in musical instrument design and in the development of technologies that use sound waves, such as ultrasound imaging and sonar systems.

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