On Mon, 17 Apr 2000 [EMAIL PROTECTED] wrote:
Hi,
> since mds are recorded w/ magnetic signals, can airport metal detectors or x
> ray machines cause damage to the info on md's?
Well, MD recording is MO, (Magneto Optical), this means that to be
magnetized, i.e. oriented (North/South) the minimum magnetic undivisible
particle that composes the MO storage medium, called domains, must be
first heated to Currie temperature with a laser. Once oriented, they cool,
and cannot be oriented until they're heated again.
So I'd bet you can put a dynamo magnet over a MD disk if you like
and it will remain intact.
Beware that depending the kind of plane, the use of MD could be
forbidden on the whole flight, or just on the shuttle (sorry, don't have a
dictionary handy :) and landing phases. At least in Spain (Iberia), and
with DC-10 or 727 planes, MD use is absolutely forbidden during the whole
flight.
greets,
*****---(*)---**********************************************---------->
Francisco J. Montilla System & Network administrator
[EMAIL PROTECTED] irc: pukka Seville Spain
INSFLUG (LiNUX) Coordinator: www.insflug.org - ftp.insflug.org
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