Xref: utzoo sci.physics:6107 comp.terminals:1141
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!cmcl2!ccnysci!xiaoqin
From: xiaoqin@ccnysci.UUCP (Xiaoqin Guo)
Newsgroups: sci.physics,comp.terminals
Subject: Re: terminals in southern hemisphere
Message-ID: <1323@ccnysci.UUCP>
Date: 24 Feb 89 23:25:29 GMT
References: <1274@sri-arpa.ARPA> <6569@geac.UUCP> <420@unicom.UUCP> <1765@gmu90x.UUCP>
Reply-To: xiaoqin@ccnysci.UUCP (Xiaoqin Guo)
Organization: City College Of New York
Lines: 34

In article <1765@gmu90x.UUCP> rauletta@gmu90x.UUCP ( ) writes:
>In article <420@unicom.UUCP> sayah_k@unicom.UUCP (KIANUSCH... Oh, no! It`s this guy again !!!) writes:
>>In article <6569@geac.UUCP>, sean@geac.UUCP (Sean Phelan) writes:
>>> I've just received a message from a colleague in Australia.  The local
>>> representative of Wyse Technology, whose terminals we are starting to 
>>> use all over the world, is saying that the terminals have to be aligned
>>> differently in the Southern hemisphere, because the magnetic flux of the 
>>> Earth goes the opposite way.
>>
>>I do have problems with my eye-glasses too... I bought them in EUROPE!!!
>>
> Better sets had Mu-Metal shields to
>reduce the effects of stray magnetic fields.

 	I did the following experiment to see the effect of magnetic field
on color TV: 
	I use a permanent magnet in the shape of cylinder with 1" diameter
and 1" height. When I put it beside my TV ( Brand Emson, made in Taiwan, 19" )
very little effect. But when I put it in front of TV screen, the portion
directly facing the magnet change colors into either purple or red , depending
on whether N or S is pointing the screen. The spot size is around 3" .

	Anyone interested may do the experient. But warning : Don't use a
strong magnet. The changed spot will remain the same color even after the
magnet is no longer there ! If that happen, try to use the "other " polarity"
which causing your problem to demagnetize. 

	base on some calcalation and experiemnce working with electron beams,
I think it is possible that the differnce between North and South Hemisphere
magnetic field could be a problem . Even if there is u-metal shielding, the 
field can definitely penetrate, althought significantly reduced, through the
screeen plan. This is probably why there is no effect when the magnet is 
beside the TV.