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- Xref: sparky sci.electronics:13373 comp.sys.ibm.pc.hardware:20374
- Newsgroups: sci.electronics,comp.sys.ibm.pc.hardware
- Path: sparky!uunet!caen!sol.ctr.columbia.edu!cs.columbia.edu!polish
- From: polish@cs.columbia.edu (Nathaniel Polish)
- Subject: Re: Airport X-Rays
- Message-ID: <Bs1yoy.x8@cs.columbia.edu>
- Sender: news@cs.columbia.edu (The Daily News)
- Organization: Columbia University Department of Computer Science
- References: <1992Jul26.215220.24958@tssi.com> <1almk_n.carlr@netcom.com>
- Date: Mon, 27 Jul 1992 14:53:21 GMT
- Lines: 11
-
- I think we should clarify the model for how an airport x-ray damages
- a magnetic medium. Certainly large fields will degauss a floppy but this
- is unlikely except as noted from the motors. The real problem with x-rays
- is that they are high-energy radiation. They can cause small ionizations
- on the surface of the disk. If the ionizations are small relative to the
- size of the magnetic domains, then there is no visable problem. As the
- media get denser, the domains get smaller and the problems appear. However,
- modern airport x-ray equipment is very sensative and they use very weak
- sources -- mostly to protect the workers.
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