OK, this may not be correct to the finest detail but I believe the basic concept is there. The dashed line traces the path of the tip of the green arrow within the prism to demonstrate the double reflection at the 2 roof-top surfaces.
Finally, I am clear about this. Thanks to all who have contribution to this discussion.:gbounce:
Both the diagrams are created by me using MS word drawing tools. Guess that means that I own the copyrights to these images. I hereby allow CS members to use them for non-profit purposes if they are of any use at all....
Finally, I am clear about this. Thanks to all who have contribution to this discussion.:gbounce:
Both the diagrams are created by me using MS word drawing tools. Guess that means that I own the copyrights to these images. I hereby allow CS members to use them for non-profit purposes if they are of any use at all....