Longitudinal wave

• compression


  Is a region of high pressure and the particles are close together
• Longitudinal wave


  Is a wave in which the particles of the medium vibrate parallel to the direction of movement of the wave

  
• Representation of longitudinal waves

  graphical representation

  
• Frequency(f)


  is the number of complete wavelengths passing a given point in one second.
• Period(T)


  is the time that one wave pulse takes to mave past a fixed point.