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seen Nov 4 '12 at 15:15

Nov
23
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Nov
4
comment Determine when a light is going into the object
So ( i dotProduct N ) < 0 ray go into the glass, is it true ?
Nov
4
comment Determine when a light is going into the object
@lubosMotl should I use i dot N as a guide ?
Nov
4
asked Determine when a light is going into the object