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- Newsgroups: sci.materials
- Path: sparky!uunet!think.com!spool.mu.edu!umn.edu!csus.edu!netcom.com!bart
- From: bart@netcom.com (Harry Bartholomew)
- Subject: Re: Wanted, physical constants of Si3N4
- Message-ID: <1992Nov11.113314.22601@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- X-Newsreader: Tin 1.1 PL5
- References: <1992Nov10.210417.21065@bnr.ca>
- Date: Wed, 11 Nov 1992 11:33:14 GMT
- Lines: 13
-
- Except for the high temperature pyrolytic forms, the properties of
- silicon nitride are extremely variable dependent on the contents of
- hydrogen, oxygen, carbon (usually).
- --
- "Partly it may be due to a phenomenon known since the very dawn of spaceflight
- in connection with certain pharmaceutical drugs. They induced adverse
- psychological effects, including radical changes of mood and personality.
- However the fact that they were prescribed by a physician militated
- against the patient's chance of deducing that they were the proximate cause
- of his suffering; indeed, he would be more inclined to ask for further drugs
- to counteract the first, and since the whole process was extremely profitable
- for all concerned save the ultimate consumer, they would be provided.
- John Brunner in "A Maze of Stars"
-