PHYSICS NOTES
Entry 02: Saturday, 9 September
Meet up with Eric at university library at 8:00 AM.
To do: Bring violin, measuring tape
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INVESTIGATING THE PHYSICS BEHIND MUSICAL INSTRUMENTS
<h4>Instruments Studied:</h4>
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Violin (String Instrument)
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Flute (Wind Instrument)
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</ul>
<h4>Research Phase:</h4>
Researching the physical principles behind the sound production of violins and flutes.
Focus: how each instrument produces sound, the role of resonance, the importance of material and shape, and the characteristic frequencies.
Violin:
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Sound Production: Produced by the vibration of strings, which are amplified by the hollow body.
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Resonance: Body of the violin acts as a resonating chamber, enhancing the sound.
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Material: Typically made of wood, with strings made of gut, metal, or synthetic materials.
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Characteristic Frequencies: The fundamental frequency and overtones depend on the length, tension, and mass of the strings.
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</ul>
Flute:
Stolen from Royal Road, this story should be reported if encountered on Amazon.
<ul>
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Sound Production: Blowing air across the mouthpiece, creating a vibration in the air column inside the flute.
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Resonance: The length of the air column and the placement of the finger holes determine the resonant frequencies.
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Material: Typically made of metal or wood.
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Characteristic Frequencies: The pitch is determined by the length of the air column and the position of the finger holes.
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</ul>
<h4>Experimental Setup:</h4>
Used a frequency analyzer app to measure the frequencies produced by the instruments when played.
Measured the physical dimensions of the instruments, such as string length (violin) and air column length (flute).
<h4>Data Collection:</h4>
<ol start="1">
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Violin:
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String Length: 32 cm
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Fundamental Frequency of Open G String: 196 Hz
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Harmonics: 392 Hz (2nd harmonic), 588 Hz (3rd harmonic)
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</ul>
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Flute:
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Length of Air Column: 66 cm
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Fundamental Frequency of C Note: 261.63 Hz
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Harmonics: 523.25 Hz (2nd harmonic), 784.88 Hz (3rd harmonic)
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</ul>
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</ol>
<h4>Analysis:</h4>
Observed that the frequencies produced by both instruments matched the theoretical values we found in our research.
- The violin''s sound is richer due to the presence of multiple harmonics.
- The flute''s pitch can be changed by varying the length of the air column using finger holes.
<h4>Conclusion:</h4>
Our investigation showed that the sound production and acoustics of musical instruments are deeply influenced by their physical characteristics. Understanding these principles helps in designing and playing instruments more effectively.
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New skill discovered about Eric: he can play the flute.
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Eric finalizing the report. To be handed at 9:00 PM for any mistakes.
Send to teacher through email tomorrow.