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Waves - Coggle Diagram

- - - - Application
        
        Echolocation
        
        v = 2d / t
- - - - from less dense to denser : towards the normal
      - from denser to less denser : away from the normal
    - - refractive index, n = sin i / sin r
      - when the light is perpendicular, there will be no refraction
      - refractive index, n = c / v
    - - Light get internally reflected when the angle of incidence is more than the critical angle
      - Critical angle is the angle of incidence when the angle of refraction is 90 degree
      - n = 1 / sin c
      - denser medium to less dense medium
      - Application
        
        Endoscope
        
        Optical Fibre
        
        Telecommunication
        
        Periscope
- - - - Compression : High Pressure Region
      - Rarefaction : Low Pressure Region