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Island Physics

MECHANICAL WAVES

Warwick Long Bay, Bermuda.  Waves coming ashore on a breezy day.   The colours have not been enhanced, Bermuda really is this beautiful! (Photo: Kate Kayaian)
Home >> AP Physics I >> Mechanical Waves >> Sound

10.2 - Sound


Picture
Physics Aviary Virtual Lab - this is another simulation of a lab that we will be performing in class.  I call this experiment the "physics of a trumbone", as we can demonstrate the equation that governs the note produced by a windy instrument.  This experiment is notriously difficult to do without either a sound intensity meter or a musician's ear.  It can also be annoyingly loud!

LINKS

Soundcard Scope - simply the best free soundwave oscilloscope for your PC there is.  
Best Windows oscilloscope program
Picture
PhET Simulation - Making Complex Waves

Nice article on Sound Wave Harmonics
Another good one
Picture
Wikipedia Article - this still is taken from the animation on the page.  It is well worth looking at as it shows both the wave representation (abstract) and the "real" pressure wave of the air molecules.  We rarely use this image as it is too difficult to draw, especially in an exam, so we convert the longitudinal sound wave into a transverse 'displacement' wave.
Online signal generator!    If you open two different windows, set the frequency to two slightly different frequencies (eg. 330 Hz and 332 Hz) you can hear the woo-woos of the beats.  The beat frequency is equal to the difference between the frequencies (in the example 332-330 = 2 Hz).
  • HOME
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    • Waves
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    • Magnetism
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    • IGCSE revision
  • Physics I
    • Kinematics >
      • Variables and Units
      • Describing Motion
      • Equations of Motion
      • Problem Solving
      • Projectiles
      • Kinematics Animations
    • Dynamics >
      • Forces
      • Static Equilibrium
      • Newton's Laws
      • Friction
      • Advanced Problems
    • Gravitation and Orbits >
      • Circular Motion
      • Vertical Circles
      • Universal Gravitation
      • Orbits
      • Circular Motion Animation
    • Energy >
      • Work
      • Springs
      • PE and KE
      • Conservation of Energy
      • Work-Energy Theorem
    • Linear Momentum >
      • Impulse
      • Conservation of Momentum
      • Types of Collision
      • 2-D Collisions
    • Simple Harmonic Motion >
      • Mass on Spring
      • Pendulums
      • SHM Animations
    • Rotational Mechanics >
      • Torque
      • Rotational Kinematics
      • Rotational Dynamics
      • Angular Momentum
      • Rotational Energy
    • Mechanical Waves >
      • Waves on a String
      • Sound
    • AP-1 Revision
    • AP Physics C (Mechanics)
  • Physics II
    • Fluid Mechanics
    • Thermal Physics
    • Electrostatics
    • Magnetic Fields >
      • EM Induction
    • Interference and Diffraction
    • Optics
    • Modern Physics
    • AP 2 Revision
  • OCEANOGRAPHY
    • The World Ocean >
      • What is Oceanography
      • History
      • Lat and Long
      • Size and Origin
      • Plate Tectonics
    • Seawater >
      • A Salty Sea
      • Measuring Salinity
      • Thermal Properties
      • Density Profiles
      • Drinking Seawater
    • Circulation and Climate >
      • Global Heating
      • Coriolis Effect
      • Surface Currents
      • Vertical Motion
      • Thermohaline Circulation
      • El Nino
      • Carbon Cycle
    • Waves and Tides >
      • Wave Motion
      • Formation of Waves
      • Beaches
      • Tsunamis
      • Tides
    • Observation Systems >
      • Challenges
      • The CTD
      • Moorings
      • Sound Waves
      • Robotics
      • Satellites
    • Weather and Navigation >
      • Weather Systems
      • Weather Forecasting
      • Hurricanes
      • Navigation
      • Life at Sea
    • Oceans and Mankind >
      • Ocean Acidification
      • Pollution
      • Fish Stocks
      • Climate Change
      • Energy Resources
    • Atlantic Explorer Cruise
    • ROVs
  • COLLEGE
    • College Physics I
    • College Physics II
  • CONTACT