> Is it possible for a transparent substance to be non-reflective? Or are
all
> transparent substances inherantly reflective to a certain degree?

Every transparent substance is reflective and is not.
If you are in water, a glass with ior of water won't reflect anything.
If you have an interface, it's reflection, if you have a gradient of ior
(like hot air on the road), you have some refraction.
That's all.
Now, try to think about a relation between ior and reflectivity...

selsek
new feature requested: auto_reflection :-))

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