The following should be possible: ``` IsotropicMixture([main_phase, sec_phase], [1. - phi, phi]) ``` where the two phase arguments are `IsotropicMedium` instances with array attributes and `phi` is an array the same shape as the phase attribute shapes.
The following should be possible:
where the two phase arguments are
IsotropicMediuminstances with array attributes andphiis an array the same shape as the phase attribute shapes.