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Wave Velocity, Amplitude & Phase change

  1. Jun 1, 2009 #1
    Hi All,

    I am having trouble trying to understand & calculate the effects that magnetic soils have on a pulsed induction metal detector, in particular soils containing iron.

    I have read this: The section on Soil Magnetic Properties.


    It says that the amplitude & phase changes with the presence of magnetic materials & the propagation time varies.

    What i am interested in is, if we have a metal detector that sends a magnetic pulse into magnetic ground containing iron etc & it contacts a metal object such as gold, what time delay is there from the time of the original pulse to the time it takes for the signal to be recieved back at the metal detector.

    Could somebody help me out with the equations as i am unfamilliar with this & an example would be very helpful.

    Thank You
  2. jcsd
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