AlfvenSpeed:

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   Computes the Alfven speed.

   The Alfv�n speed is the speed of the waves resulting from the mass
   of the ions and the restoring force of the magnetic field:
   The Alfv�n speed is the speed at which hydromagnetic waves travel 
   along a magnetic field line and is the characteristic speed at which
   perturbations of magnetic field lines travel.

   Type AlfvenSpeed for a demo

   Since version 11.
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   Form:
   v = AlfvenSpeed( b, rho )
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   Inputs
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   b              (1,:) Magnetic field (T)
   rho            (1,1) Density (kg/m^3)

   -------
   Outputs
   -------
   v              (1,:) Velocity (m/s)

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Children:

Common: Graphics/Plot2D
Propulsion: Electric/AtomicMass