"Rossland opacity" . "opacities" . . . "Opacity (optics)" . "Rosseland opacity" . . "opaque" . "opaque baffle" . . . . . "density" . "Opacity (optics)" . . . . "Rosseland optical depth" . . "Rosseland Radius" . "opacity" . "translucent" . "opacity (optics)" . "transparent" . "extinction coefficients" . "Rosseland mean opacity" . . . "Opaque" . . "atmospheric transparency" . . "Rosseland radius" . "completely opaque" . . "opaqueness" . "Opacity" . "non-transparent" .