light diffusion造句

I understand what homegeneous means, but what about the light diffusion part?
This may be partially ameliorated through light diffusion, light pipes or tubes, and through somewhat reflective internal surfaces.
:: : : : : So after asking that I realized I didn't know what light diffusion was in the first place, and I searched for the Wikipedian article about it, only to find out there is no article.
Even if no visible astronomical objects are present in given part of the sky, there always is some low luminosity present, due mostly to light diffusion from the magnitude per square-arcsecond : a very low level, but anyway well within the limits of the current generation of telescopes.
It's difficult to find light diffusion in a sentence. 用light diffusion造句挺难的