The effect would also be dependent on the round shape of the glass. I don't believe the reversal would be seen if a rectangular aquarium were passed in front of the arrows. Via Gerard Vlemmings' The Presurfer.
It is dependent on both the curvature of the glass and the placement of the camera and paper. The reversal happens because the lens is set up to be a relay imagining system. The relative position of the two determines the magnification which needs to be 1 to 1 for this effect to work.
Quite an interesting comment on politics and politicians I think...
ReplyDeleteIt is dependent on both the curvature of the glass and the placement of the camera and paper. The reversal happens because the lens is set up to be a relay imagining system. The relative position of the two determines the magnification which needs to be 1 to 1 for this effect to work.
ReplyDeleteIn layman's language, "it only works at one distance."
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