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Nov 11, 2015 at 7:38 comment added Deer Hunter Ducting is not about bounces off the surface, it is about refraction. While energy always leaks from the duct and reflects off the surface, it is a second-order effect.
Nov 9, 2015 at 21:51 history edited DeltaLima CC BY-SA 3.0
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Nov 9, 2015 at 21:45 history answered DeltaLima CC BY-SA 3.0