From: dmichel@prosound.de   
      
   Hi Simon,   
      
    > [...] mirrors are a complete nightmare since   
    > I can't explain left-right inversion to an   
    > elementary school kid without using the word 'magic'   
      
   from the little I know about mirrors I seem to recall   
   that left-right inversion is hardly explainable because   
   it doesn't exist.   
      
   Mirrors do not swap left and right, but front and back.   
   The impression that left and right would be swapped   
   by the mirror only comes about when one (involuntarily)   
   puts oneself in the place of the mirror image and thus   
   changes the coordinate system without being aware of it.   
   Then one's own left hand magically seems to be the   
   right hand of the mirror image and vice versa.   
      
   If one does not change the coordinate system, left remains   
   left and right remains right.   
      
   Just my 2 cents,   
      
   Dieter   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)