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   Outputs the wavelengths for bands of electromagnetic radiation.

   Type Wavelength for a demo. See also FrequencyToWavelength.
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   Form:
   lambda = Wavelength( band, new )
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   ------
   Inputs
   ------
   band	    (1,:)  Band, i.e. 'lf', 'ka'
   new         (1,1)  Use new bands, i.e. 'a', 'b'

   -------
   Outputs
   -------
   lambda  (:)    Wavelength (m)

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