Would magn. pole reversal actually mess up electronic equipment?
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From: Paul Keinanen on 30 Nov 2009 17:29 On Mon, 30 Nov 2009 07:19:02 -0800 (PST), JJ <santa(a)temporaryinbox.com> wrote: >Hi > >this has perhaps been asked before(?) > >Apologies in that case. > >What I wanted to ask is, if earths magnetic pole now would manage to >flip in a really quick timespan (let's say less than 5 minutes), would >that have any effect on electronic equipment, and if so, why? The only I can think about are the variosu HDTV CRT studio monitors that required different alignment depending on the hemishpere they were intended to be shipped. >I mean I would think that the would not be any effect. After all, >electronic equipment do not rely on earths magnetic field in some way. >How would they? > >Or would there be some effect on electronic equipment if the flip >happened in less than 30 seconds? The electricty network would no doubt crash, due to the DC saturation of transformer cores. Currents flowing in natural gas pipelines could cause some significant havoc.
From: Adrian Jansen on 30 Nov 2009 17:54 JJ wrote: > Hi > > this has perhaps been asked before(?) > > Apologies in that case. > > What I wanted to ask is, if earths magnetic pole now would manage to > flip in a really quick timespan (let's say less than 5 minutes), would > that have any effect on electronic equipment, and if so, why? > > I mean I would think that the would not be any effect. After all, > electronic equipment do not rely on earths magnetic field in some way. > How would they? > > Or would there be some effect on electronic equipment if the flip > happened in less than 30 seconds? > > Thanks in advance, If you take a piece of equipment and turn it around, or over, you reverse the field through it. Does that affect it ? -- Regards, Adrian Jansen adrianjansen at internode dot on dot net Note reply address is invalid, convert address above to machine form.
From: Rich Grise on 30 Nov 2009 18:14 On Tue, 01 Dec 2009 08:54:10 +1000, Adrian Jansen wrote: > JJ wrote: >> >> What I wanted to ask is, if earths magnetic pole now would manage to >> flip in a really quick timespan (let's say less than 5 minutes), would >> that have any effect on electronic equipment, and if so, why? >> >> I mean I would think that the would not be any effect. After all, >> electronic equipment do not rely on earths magnetic field in some way. >> How would they? >> >> Or would there be some effect on electronic equipment if the flip >> happened in less than 30 seconds? >> >> Thanks in advance, > > If you take a piece of equipment and turn it around, or over, you reverse > the field through it. Does that affect it ? Probably. I've moved monitors around in the office, and had to re-degauss them. Cheers! Rich
From: Spehro Pefhany on 30 Nov 2009 18:42 On Mon, 30 Nov 2009 11:23:53 -0700, the renowned Don Lancaster <don(a)tinaja.com> wrote: >Martin Brown wrote: >> JJ wrote: >>> Hi >>> >>> this has perhaps been asked before(?) >>> >>> Apologies in that case. >>> >>> What I wanted to ask is, if earths magnetic pole now would manage to >>> flip in a really quick timespan (let's say less than 5 minutes), would >>> that have any effect on electronic equipment, and if so, why? >> >> On the night side you would see global aurora for a few minutes if the >> sun was suitably active. Most satellite electronics will survive all but >> the nastiest solar flares. >>> >>> I mean I would think that the would not be any effect. After all, >>> electronic equipment do not rely on earths magnetic field in some way. >>> How would they? >> >> Gauss meters, hall probes and magnetic compass devices and the like >> would not be too happy. And all the shims for NMRs would need to be >> redone since the Earths field would be the opposite polarity and perhaps >> not at the same dip angle. >>> >>> Or would there be some effect on electronic equipment if the flip >>> happened in less than 30 seconds? >> >> If you flip it fast enough then you could induce damaging currents in >> long conductors. That has happened in the past with te most powerful >> solar flare storms over Canada eg in 1989. See for example: >> >> http://www.spaceweather.gc.ca/se-pow-eng.php >> >> But unless the Earth's field had a similar rate of change to that >> experienced in an extreme magnetic storm I think most things would take >> it in their stride. Big continental power grids with long wires would be >> the most likely to drop out. >> >> Regards, >> Martin Brown > >It certainly would not do compasses much good. Short Staedtler shares? Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff(a)interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
From: Martin Riddle on 30 Nov 2009 20:53
"Don Lancaster" <don(a)tinaja.com> wrote in message news:7nigt9F3m0srfU1(a)mid.individual.net... > Martin Brown wrote: >> JJ wrote: >>> Hi >>> >>> this has perhaps been asked before(?) >>> >>> Apologies in that case. >>> >>> What I wanted to ask is, if earths magnetic pole now would manage to >>> flip in a really quick timespan (let's say less than 5 minutes), >>> would >>> that have any effect on electronic equipment, and if so, why? >> >> On the night side you would see global aurora for a few minutes if >> the sun was suitably active. Most satellite electronics will survive >> all but the nastiest solar flares. >>> >>> I mean I would think that the would not be any effect. After all, >>> electronic equipment do not rely on earths magnetic field in some >>> way. >>> How would they? >> >> Gauss meters, hall probes and magnetic compass devices and the like >> would not be too happy. And all the shims for NMRs would need to be >> redone since the Earths field would be the opposite polarity and >> perhaps not at the same dip angle. >>> >>> Or would there be some effect on electronic equipment if the flip >>> happened in less than 30 seconds? >> >> If you flip it fast enough then you could induce damaging currents in >> long conductors. That has happened in the past with te most powerful >> solar flare storms over Canada eg in 1989. See for example: >> >> http://www.spaceweather.gc.ca/se-pow-eng.php >> >> But unless the Earth's field had a similar rate of change to that >> experienced in an extreme magnetic storm I think most things would >> take it in their stride. Big continental power grids with long wires >> would be the most likely to drop out. >> >> Regards, >> Martin Brown > > It certainly would not do compasses much good. > > -- > Many thanks, > > Don Lancaster Would magnetic north be in a different place ;) Cheers |