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Article #1199Neutron Measuring 50 Years Ago
From: Dick Jackson
Date: Tue, 05 Jan 1993 20:53
Date: Tue, 05 Jan 1993 20:53
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I am typing in this extract from the New Scientist magazine (without their permission, although the managers of such an excellent magazine would surely approve) because it reminded me of what I am not reading in this group: "... The experiment resumed at 2:30 pm. Fermi again instructed the pile to be operated with a single conrol rod, as he calculated what the neutron count would be when the rod was withdrawn by another foot.... "The neutron counter was eventually overwhelmed, and everyone's attention turned to the chart recorder, its pen scratching out a continuous ascent. Fermi spent several minutes carefully checking that the rise was exponential, that is, rising by the same factor in each successive time interval -- evidence that the chain had been established. He put away his slide rule and broke into a broad smile, announcing: 'the reaction is self-sustaining'. The reactor was working at half a watt." ^^^^^^^^^^^ Obfusion: the New Scientist recently lam-(ever so slightly)-pooned Frank Close in a jokey almanac for 1993. Something about his hat. Dick Jackson
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Newsgroups: sci.physics.fusion Path: arc1-ca.pugleaf.net!sparky!uunet!usc!news.service.uci.edu!ttinews!soldev!jackson From: jackson@soldev.tti.com (Dick Jackson) Subject: Neutron Measuring 50 Years Ago Message-ID: <1993Jan5.205322.1986@ttinews.tti.com> Sender: usenet@ttinews.tti.com (Usenet Admin) Nntp-Posting-Host: soldev.tti.com Organization: Transaction Technology, Inc. Date: Tue, 5 Jan 1993 20:53:22 GMT Lines: 22