The World Communicates
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  The story of communications and optics from the time of the ancients, now and into the future.
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Lesson 6 - Frequency and wavelength
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Activity
  • Plan and choose equipment for a first-hand investigation into the relationship between the frequency and wavelength of a sound wave travelling at a constant velocity.
  • Perform the investigation by measuring frequency, wavelength and velocity.
  • Analyse your data to determine/confirm the relationship between frequency, wavelength and velocity.
   You can measure:
  • sound frequency using an oscilloscope or data logger;
  • sound speed using a storage oscilloscope or data logger; and
  • sound wavelength using resonating tubes.
Key physical concepts

Wave velocity v, frequency f and wavelength l are related by:
v = f l
Homework
  • None
Extension work

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