Wave EEI - Background Theory

Wave EEI - Background Theory

1. What is a wave?

   • What are the types of waves? (Compare and contrast)
     • Electromagnetic
     • Mechanical
       • Transverse
         • INCLUDE DIAGRAM
       • Longitudinal
         • DIAGRAM
         • What are sound waves?
           • Compressions & Rarefactions
           • Change in v, P and disp.
           • Reflected, refracted, attenuated by medium.
           • Affected by 3 things:
             • Density/pressure
             • Motion of medium
             • Viscoisty of the medium

2. How does a wave depend on other factors?

   • frequency + velocity (wave equation)
     • Explain the effect of these var.

3. Waves in pipes

   • Open-ended pipe
   • Closed ended pipe
     • Wine glass
       • Slip-Stick motion
     • Nodes & Antinodes

4. What is resonance?

   • Acoustic resonance
     • How does this relate to humans?
       • Hearing range: 20 Hz to 20,000 Hz
   • Natural frequency
     • Damping