Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site brl-sem.ARPA Path: utzoo!linus!philabs!cmcl2!seismo!brl-tgr!brl-sem!ron From: ron@brl-sem.ARPA (Ron Natalie) Newsgroups: net.puzzle Subject: Re: analogy of rod along side of square is UNconvincing. Message-ID: <451@brl-sem.ARPA> Date: Thu, 24-Oct-85 22:42:03 EST Article-I.D.: brl-sem.451 Posted: Thu Oct 24 22:42:03 1985 Date-Received: Thu, 31-Oct-85 02:25:05 EST References: <1028@decwrl.UUCP> Organization: Ballistic Research Lab Lines: 6 Yes and I suspect the reason heating the barrel hoops or wagon wheel rings works is that the thermal expansion is proportional to the length. The circumfrence of the ring is much larger than the thickness so the fattening of the ring is negligable compared to the increase in circumfrence. =ron