I'm guessing that the only way you could touch the mirror image of your finger i...

adamman on Dec 20, 2012 | parent | context | favorite | on: Math Professor Invents Non-Reversing Mirror

I'm guessing that the only way you could touch the mirror image of your finger is by doing so in the middle of the mirror. If you move the finger out toward the shoulder, I'm betting your arm would stretch off the mirror away from your body. I could be totally wrong though.

dllthomas on Dec 20, 2012 [–]

Look at the cover of the book that the trick mirror is resting on.