Article View: sci.materials
Article #64Re: Insulator with good heat conductivity
From: John Whitmore
Date: Thu, 30 Jul 1992 00:37
Date: Thu, 30 Jul 1992 00:37
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In article <17760004@hpnmdla.sr.hp.com> stanb@hpnmdla.sr.hp.com (Stan Bischof) writes: >In sci.materials, whit@milton.u.washington.edu (John Whitmore) writes: >>best bet is BeO (highly toxic, by the way!) >Nonsense. This is pure urban legend. You could eat BeO on your breakfast >cereal and have no problems. >The only problems with BeO come in when you powder it very finely and >inhale it into your lungs. The small particles cause some nasty reactions >similar to what happens with inhaled asbestos. Basically a mechanical >irritation. Are you certain of that? My trusty TLV-TWA table shows acceptable dust levels of arsenic at 0.5 mg/m^3, and of beryllium at 0.002 mg/m^3; beryllium is a very toxic light-metal poison, and I always thought the oxide was just as toxic. John Whitmore
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Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!sdd.hp.com!uakari.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!milton.u.washington.edu!whit From: whit@milton.u.washington.edu (John Whitmore) Newsgroups: sci.materials Subject: Re: Insulator with good heat conductivity Message-ID: <1992Jul30.003724.12642@u.washington.edu> Date: 30 Jul 92 00:37:24 GMT References: <7926@dirac.physics.purdue.edu> <17760004@hpnmdla.sr.hp.com> Sender: news@u.washington.edu (USENET News System) Organization: University of Washington, Seattle Lines: 19