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From: ags@pucc-i (Seaman)
Newsgroups: net.philosophy
Subject: Re: Why do mirrors reverse left & right, not up & down?
Message-ID: <174@pucc-i>
Date: Thu, 2-Feb-84 14:30:56 EST
Article-I.D.: pucc-i.174
Posted: Thu Feb  2 14:30:56 1984
Date-Received: Wed, 8-Feb-84 03:18:54 EST
References: <533@bbncca.ARPA>
Organization: Purdue University Computing Center
Lines: 29

Mirrors do NOT reverse left & right, OR up & down.

Only back & front (i.e. perpendicular to the mirror).

If you WANT to reverse left & right, that can be arranged.
Set up two mirrors at an angle, like this:

		/\
	       /  \
	      /    \
	     /      \
	    /        \

	      ^ ^ ^
	      | | |
	      | | |

	   line of sight

If you look into these mirrors (placed approximately at right angles)
and you are facing north, then you can wink your EAST eye and see your
image wink its WEST eye.
-- 

Dave Seaman
..!pur-ee!pucc-i:ags

"Against people who give vent to their loquacity 
by extraneous bombastic circumlocution."