Waves

Waves

1. Types

   • Longitudinal
     • parallel
     • sound
     • compressions
     • rarefactions
   • Transverse
     • perpendicular
     • electromagnetic
     • seismic
     • string

2. Polarisation

   • only transverse
   • one plane
   • polaroid filter
     • sunglasses
       • reduce glare
       • lower intensity
   • radio waves
     • adjusting aerial

3. Key terms

   • displacement
   • amplitude
   • wavelength
   • cycle
   • period
   • frequency

4. Wave speed

5. Phase difference

   • fraction of a cycle
   • degrees
   • radians
   • 1 cycle=360*

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