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From: osman@sprite.DEC (Eric, DIGITAL, Burlington Ma.  617 273-7484)
Newsgroups: net.puzzle
Subject: analogy of rod along side of square is UNconvincing.
Message-ID: <1028@decwrl.UUCP>
Date: Thu, 24-Oct-85 09:26:45 EDT
Article-I.D.: decwrl.1028
Posted: Thu Oct 24 09:26:45 1985
Date-Received: Sat, 26-Oct-85 03:40:00 EDT
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Organization: Digital Equipment Corporation
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>     Since the piece of metal expands uniformly when it is heated,
>the hole must expand.  If you use a square hole, consider the 
>portion of the metal that runs along an edge of the square hole.
>If this rod-shaped portion of the metal piece was heated by itself,
>it would expand in length; so it must also expand in length when it
>is part of the hole.  Thus, the length of the side of the hole must get
>bigger and the hole expands.
> 
>   David Moews     ...harvard!h-sc1!moews_b   moews_b%h-sc1@harvard.arpa
>       "The Cray-5 can execute an infinite loop in under a minute."

	Quite an UNconvincing argument.   The rod would get fatter too,
	suggesting it's wideness intrudes into the square, so perhaps
	the square hole gets *smaller*.

/Eric