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Nov 26, 2016 at 14:16 comment added wizzwizz4 I have created a .gif image showing the strip of paper model: click here to access it.
Nov 26, 2016 at 12:28 comment added wizzwizz4 You can also model this with a strip of paper: fold it in half so that the two short sides touch, fold the paper near the crease at a random angle, then unfold along the two new creases so that the majority of the paper is flat and the part containing the original crease is perpendicular to it. If you imagine the original crease as the two "parallel universes" and the two new creases as the mirrors, the angles match up with what is observed.
Nov 26, 2016 at 12:26 comment added wizzwizz4 @Zxyrra Although it seems counter-intuitive at first, this is a valid way of looking at mirrors. If you own the video game "Portal 2" you could (using the Source SDK) make a mock-up of two mirrored rooms and tie two surfaces together, enable moving portals and place a portal on each. Moving and rotating both surfaces simultaneously will show a "mirror effect" when looking through the portals.
Nov 24, 2016 at 23:09 history edited Ewan CC BY-SA 3.0
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Nov 24, 2016 at 23:00 history edited Ewan CC BY-SA 3.0
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Nov 24, 2016 at 22:53 comment added Ewan not at all. if the mirror is a window to a parallel universe from which you look out of in the opposite direction to the way you look into it in the 'real' world. Then you get the expected moving the mirror away from you also moves it away from your twin effect. but you can also change the orientation without problem and dont need to flip the mirror world
Nov 24, 2016 at 22:47 comment added Zxyrra Not true. Moving position of the door allows the universes to remain in the same place; moving the orientation while keeping 1 dimension requires shifting the entire universe
Nov 24, 2016 at 22:44 comment added Ewan if you follow that logic then you only need a single mirror dimension
Nov 24, 2016 at 22:40 comment added Zxyrra On the contrary, it simply moves the door between two places of fixed location
Nov 24, 2016 at 22:39 history answered Ewan CC BY-SA 3.0