[Radiance-general] Problem with refraction in Dielectric material

[Thomas Bleicher]

Francesco.

As Greg already wrote, Radiance is not suited for your type of calculation.

The difference in your results files might be caused by interpolation of
cached
values. You are calculating tiny steps (0.1units) in a large geometry (10000
units).
I wouldn't trust Radiance to produce absolutely accurate results on that
scale and
the differce you see is less than 2 units.

You can try to disable the ambient cache completely by setting -aa to 0. No
need
for an ambient cache file, then.

Thomas
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