home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.ibm.pc.misc
- Path: sparky!uunet!dcatlas!joet
- From: joet@dcatlas.dot.gov (Joe Trott)
- Subject: Re: Pizza Hut erases diskettes
- Message-ID: <1992Dec31.155326.3968@dcatlas.dot.gov>
- Organization: U.S Dept. of Transportation
- References: <1992Dec30.000429.24047@panix.com> <1992Dec30.213211.5311@cbfsb.cb.att.com> <3241@contex.contex.com>
- Date: Thu, 31 Dec 1992 15:53:26 GMT
- Lines: 22
-
- avinash@sam.contex.com (Avinash Chopde) writes:
-
- >This brings up another question---I have seen many persons (me too),
- >keep floppies close to the monitor.
- >And the monitor is turned on and off once a day.
- >I have done this for more than two years now, but my floppies are still
- >readable, so it seems that the magnetic field on a floppy is quite
- >strong and does not get destroyed easily.
-
- >Yet, have heard horror stories of floppies near huge loudspeakers,
- >or over a TV, etc, are these stories really true, or are they urban
- >legends?
-
- They are mostly true. Loudspeakers and TVs (in fact _any_ appliance with
- transformers including flourescent ballasts) emit _alternating_ magnetic
- fields, which can destroy the data on a floppy instantly if strong enough.
- In your case, the floppies probably aren't close enough, and/or they are
- on a side of the monitor away from the flyback and any other transformer.
- Also, your monitor probably has a cage around the loudest emitters.
-
- -JTT
-
-