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North Pole is Leaving Canada

Dedekind writes: "CNN.com is posting this story on the drifting of the Magnetic North Pole. Not only is the pole shifting from a spot just North of Resolute, Canada, Canadian scientists expect it to end up in Siberia within the next half-century. Perhaps the most interesting part of the story (which really is only a small part at the end) is that many couples like to go to the magnetic North Pole to conceive their children. "

128 of 380 comments (clear)

  1. Effect on topo maps by wiredog · · Score: 5, Insightful

    Most, if not all, topographic maps have the difference between True north and magnetic north noted on them. This is so that people navigating by compass don't get lost. If the magnetic pole is moving that fast, then the maps are going to have to be updated much more frequently.

    1. Re:Effect on topo maps by Boulder+Geek · · Score: 5, Informative

      This is very old news. The NMP has been known to drift for pretty much as long as there have been compasses. The magnetic declination on topo maps has always been out of date, usually from the moment they've been printed. For example, I've had people tell me that the magnetic declination in the Rocky Mountain Front Range is 17 deg E (based on topos), when in fact it is currently close to 0 (I'm too lazy to look up current coordinates ;-). It may very well have been 17 deg in 1903, but the pole has drifted considerably since then!

      The article also makes it clear that the odds are poor that it will actually end up in Siberia, as the pole has never followed a straight line, and the rate of movement has always been unpredictable.

      --
      A well-crafted lie appears unquestionable - Dama Mahaleo
    2. Re:Effect on topo maps by daniel_isaacs · · Score: 2

      I dont know about anything else, but the nautical charts put out by the Canadian and American hydrographical services have corrections for this. I would think that any topographical map that had a magnetic north pole would have corrections for the change too.

      True, they do. But that difference is what's changing. Thus the printed maps will be out of date

      --
      - Dan I.
    3. Re:Effect on topo maps by mikeboone · · Score: 2

      maps are going to have to be updated much more frequently.

      Probably a good idea. I was doing some recent work with plotting GPS tracks on USGS topo maps. These maps, which I downloaded from the web, stated that they had been made in 1964 and last updated in 1976!

    4. Re:Effect on topo maps by Ioldanach · · Score: 2, Informative
      But that difference is what's changing. Thus the printed maps will be out of date

      IIRC, marine charts (what a map's called when you put it on a boat) at least regularly have correction sheets printed, so the charts don't go out of date as quickly.

    5. Re:Effect on topo maps by rehannan · · Score: 4, Insightful

      I don't know about you, but I would never go out into the bush without a compass. True, I may also have a handheld GPS unit, but what if it's batteries run out or it falls 200 feet down a rocky slope or I drop it in a lake? For something as important as navigation, never rely on just one device.

    6. Re:Effect on topo maps by Bonker · · Score: 5, Insightful

      Who cares about geomagnetic north with the advent of GPS?

      Those without electricity to run GPS devices.

      Say that you are in a non-urban environment somewhere, either a Boyscout on a trip in the Southwest U.S., a U.S. serviceman in the mountains of Afghanistan, or a deep-sea fisherman off the coast of New England. If you're lucky, you have a GPS device that tells you exactly where you are and what route you should take to get to where you're going. It's certainly safer that way, idn't?

      Suppose that your batteries run down, or your generator breaks down, or the GPS device you're using doesn't have a hand crank. I bet you'd really like to know the difference between true north and magnetic north right about then.

      Suppose the U.S. goes to war in the near future with a country who is not vastly overwhelmed by our military might. If I was in charge of a war effort in such a country, (China for example, which may happen depending on how we handle the 'War on Terrorism'), I would make a point of using missiles to eliminate the network of GPS sattellites in order to confuse and confound my enemies.

      U.S. soldiers, pilots, and ship captains would *have* to care about Magnetic vs. True north at that point. I'm almost certain that standard field gear for all U.S. servicemen still includes a magnetic compass. Any of the Military readers care to confirm or correct me?

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    7. Re:Effect on topo maps by www.sorehands.com · · Score: 2
      The maps really don't have to be updated. True north is not magnetic north.


      What has to be updated are navigation systems that use magnetic north and calculate the true north based on magnetic variance.

    8. Re:Effect on topo maps by fmaxwell · · Score: 2

      GPS works. It works very well. So does GLONASS. There is no reason why, in the 21st century, someone should be navigating with a compass when two handheld GPS units would fit in a jacket pocket.

      I'm sure that I'll get flamed by people with all kinds of absurd scenarios about the satellites going offline, batteries dying, and interference from migratory waterfowl. So be it. If someone mounting a wilderness expedition can't be trusted to pack batteries and spares for their equipment, then they need to stay home and watch National Geographic Explorer on television.

    9. Re:Effect on topo maps by md17 · · Score: 2, Informative

      The difference between magnetic and true north is called declination. Some maps even say how much the declination changes per year. Here is a nice FAQ about declination which includes a section about how to determine declination. More information about declination Here.

    10. Re:Effect on topo maps by issachar · · Score: 2, Informative
      yes, you can break a compass, but a compass is still a lot more hardy than a GPS.

      also, you can make a compass using a bowl of still water, a blade of grass, and a small sliver of ferrous metal. (like the hand of a watch)

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    11. Re:Effect on topo maps by gorilla · · Score: 2

      I'm wondering if magnetic north is becoming less and less important. I use true north when I'm navigating, cause that's why my GPS gives.

    12. Re:Effect on topo maps by rlowe69 · · Score: 2

      also, you can make a compass [thinkquest.org] using a bowl of still water, a blade of grass, and a small sliver of ferrous metal. (like the hand of a watch)

      Yes, but then it's decidedly less portable. ;)

      --
      ----- rL
    13. Re:Effect on topo maps by fishboy · · Score: 2, Insightful

      yes, i'll disagree with you.

      there are things that a compass can do (gasp!) that gps can't, like taking bearings off of other objects to figure out what they are on the map and the inverse, plotting courses from the map and sighting them to the real world.

      sure, a gps can give you a rough arrow on an LCD display of which way to go, but a compass can tell you precisely (within a half degree) of the direction over a long distance in very little time. who wants to keep looking at the gps all the time? with a compass, sight once, walk or canoe several kilometres, sight again.

      and it's technology overload. in most circumstances a compass is more than enough and does the job faster with the same (necessary) accuracy. i don't *need* to know within a metre where i am, i only need to know within a hundred metres, and even that is overkill sometimes.

      i also believe that the gps offers a false sense of security, that people believe that they won't be able to get lost without it.

      and then there's the whole nature/tech separation which is the whole reason people go outside in the first place, to get away from the gadgets. i don't even like tripping with my watch.

      my two cents. i'm sure they have a billion applications.

    14. Re:Effect on topo maps by delcielo · · Score: 2

      You are absolutely right.

      I don't know about the topo maps your relating to; but the NOAA puts out navigational charts for pilots with topographical data that are updated every 6 months.

      I've even experienced the odd little thing of the runway at my local airport being renumbered because it's magnetic alignment shifted just enough.

      --
      Hot Damn! It's the Soggy Bottom Boys!
    15. Re:Effect on topo maps by delcielo · · Score: 2

      It should also be noted that the gps signal is fairly weak, and wouldn't be hard to interfere with.

      All that fancy navigational equipment I have in my airplane doesn't come close to approaching the compass/stopwatch/map for reliability.

      --
      Hot Damn! It's the Soggy Bottom Boys!
    16. Re:Effect on topo maps by crumley · · Score: 2
      It didn't say why the North Pole is moving (unless I missed it). It's because of solar wind, correct?
      No, these movements of the pole are not caused by the solar wind. The solar wind does affect the location of the poles, but on shorter time-scales. The movements of the poles are believed to be caused by shifts in the core of Earth that affect the dynamo that causes the Earth's intrinsic magnetic field.
      --
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    17. Re:Effect on topo maps by guyo26 · · Score: 4, Insightful

      As a former light infantryman in the 10th Mountain Division [you may have heard of them recently] I can say with absoulte conviction that GPS is a hunk of crap.

      Yes, we had them, no they were not accurate enough. Several times we took a GPS reading to a KNOWN location. Known as in to 8 digits. For those who don't know what that means, here's a link:
      http://www.adtdl.army.mil/cgi-bin/atdl.dll/ fm/3-25 .26/toc.htm

      The GPS was consistently off by at least 30 meters. That may not sound like a lot, but when you are calling for direct fire, 30 meters is the difference between wiping out the enemy and wiping out your squad or platoon.

      Yes, the lensatic compass is still standard issue: http://www.rangerjoes.com/catalog/selection.cfm?ca tegory=main&id=795

      The biggest reason why people wash out of military schools is LandNav [well, and PT I guess]. No combat soldier trusts his luck to a contraption that may/may not be accurate.

      Of course this doesn't apply to helicopter pilots and others. And also it doesn't apply to desert regions like Iraq [see Bravo Two Zero for an example of a GPS must]. But for day to day use I'll take my lensatic compass over a GPS in a heartbeat.

    18. Re:Effect on topo maps by GoRK · · Score: 3, Interesting

      It should also be noted that the gps signal is fairly weak, and wouldn't be hard to interfere with.

      This is a problem which has been all but solved. The military has developed vehicle-mounted gps recievers that can deal with inconceivable amounts of jamming (something about using multiple recievers to filter out the jamming signal - im not a radio expert), then relay the signal over some un-jammed frequency (software-based radio maybe?) to provide highly accurate positioning to weapons and personnel in the field who are unable to recieve the "native" gps signal.

      Couple this with the military's ability to selectively introduce faulty data into the GPS signal (and remove it on the ground) and you have a pretty good system for getting you within 10 feet of where you want to go and disorienting your enemy besides.

      And in response to the grandparent of this post, good luck hitting any LEO satellite with a missle. That's like trying to shoot a fly at 5000 yards with a .44. Talk about a feat! A more effective anti-satellite weapon would probably be a railgun (a real railgun) capable of hurling millions of particles of dust sized shrapnel at insane speeds in the general vacinity of the target satellite -- if they'd ever finish the development of the weapon..

      All that fancy navigational equipment I have in my airplane doesn't come close to approaching the compass/stopwatch/map for reliability.

      Ah yes but it certainly does for accuracy and detail!

    19. Re:Effect on topo maps by rehannan · · Score: 2

      Yes, but the adage of "Don't put all your eggs in one basket" still holds true.

    20. Re:Effect on topo maps by bluGill · · Score: 2

      If I drop my compass down a rocky slope, I can recover the neddle and hang in from a string (I can make some soft of string).

      If I drop my compass into a lake I need only retrive it (easier said then done, but often possibal), and it will work. A GPS can short out and not work again, or at least not work until it dries, while a compass works underwater.

    21. Re:Effect on topo maps by rehannan · · Score: 2
      And in response to the grandparent of this post, good luck hitting any LEO satellite with a missle.

      GPS satellites aren't in LEO. They orbit at an altitude of 20,200 km (12,552 miles).

    22. Re:Effect on topo maps by Sylver+Dragon · · Score: 2, Informative

      And in response to the grandparent of this post, good luck hitting any LEO satellite with a missle. That's like trying to shoot a fly at 5000 yards with a .44. Talk about a feat!

      Actually, hitting a satellite in orbit was done back in the '80's. Sure, it was by the US Air Force, but I don't think that they have a monopoly on cool weapons tech. ASAT missle

      --
      Necessity is the mother of invention.
      Laziness is the father.
    23. Re:Effect on topo maps by rehannan · · Score: 2

      The difference between true north and magnetic north is refered to as deviation, declination, and variation. I personally prefer declination.

    24. Re:Effect on topo maps by Kanasta · · Score: 2

      Maps are marked as:

      Magnetic north is X deg from geographic N in 19xx, and moves Y deg W each year.

      They would only contain errors when the SPEED of movement changes.

      Seriously tho, in all my camping trips, we never bother calculating true N.

      I mean, trees, hills, Am I really going to mistake that mountain from that valley?

      People that need to calc T N, will know how to calc it properly.

    25. Re:Effect on topo maps by payslee · · Score: 4, Insightful

      To join the objections bandwagon: My biggest issue with GPS is that it doesn't work reliably under tree cover or in canyons, something most manufacturers don't go out of their way to advertise. In the Pacific Northwest, where I do most of my hiking, this means GPS isn't that useful. I mean, it can be sort of fun, and you can download maps and see a little "X marks the spot" right on the trail where you're standing, but I would *never* leave my compass at home.

      My favorite example of this was a 4 day outing I did last summer. Two of my friends brought their new GPS toys to play with, and were placing bets on which was better. Due to terrain and heavy tree cover, they were only able to get a reading from one spot the first day. Two spots on the second, and from nowhere (except the parking lot) on the last two days.

      Map and compass are easy to master, cheap, always reliable, and weigh less than two ounces. Sure, you can bring your GPS, but I'm still not leaving my compass at home.

      --
      Doing my part to piss off the religious right.
    26. Re:Effect on topo maps by armb · · Score: 2

      > The magnetic declination on topo maps has always been out of date, usually from the moment they've been printed.

      UK OS maps have "magnetic deviation is in , varying at per year". The rate isn't actually constant, since as you say the poles movement is irregular, so an old map will still give a wrong answer, but it takes a few years for the inaccuracy to be enough to be significant with a hand-held compass.

      --
      rant
    27. Re:Effect on topo maps by armb · · Score: 2

      Damn. Forgot "Plain Old Text" means "Plain Old Text, but < and > still have to be < and >. Should have previewed. Anyway: "magnetic deviation is in , varying at per year"

      --
      rant
    28. Re:Effect on topo maps by Alsee · · Score: 3, Insightful

      The GPS was consistently off by at least 30 meters. That may not sound like a lot, but when you are calling for direct fire, 30 meters is the difference between wiping out the enemy and wiping out your squad or platoon.

      ...I'll take my lensatic compass over a GPS in a heartbeat.


      I'm sure your squad will rest easy knowing you are calling for direct fire based on your compass with better than 30 meters precision.

      -

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  2. I don't need the magnetic North Pole... by TheNecromancer · · Score: 2, Funny

    to conceive my children, I like doing it anywhere!
    :D

    --
    Attention all planets of the Solar Federation! We have assumed control! - Neil Peart
  3. Hm... by Carlos+Laviola · · Score: 2

    I just wonder what makes people think that the pole is special enough so that they want to conceive their children there. I mean, would they think their fluids would be at their best, or the magnetism would only attract good genes?

    1. Re:Hm... by gilroy · · Score: 5, Insightful
      Blockquoth the poster:

      I just wonder what makes people think that the pole is special enough so that they want to conceive their children there.


      Magnetic fields, like electric fields, are the modern equivalent of leprechauns, fairies, and demons. For the typical layperson, they are invisible, subtle, and inexplicable. The people going to the North Pole to conceive are the spiritual descendants of those who waited on midsummer's eve in the sacred grove. Since it's something they can't see and don't understand, it must be powerful.
    2. Re:Hm... by Ooblek · · Score: 2
      In California, the power companies lease the land under the high-power lines to things like nursuries and christmas tree farms. Why travel to the North Pole to get it on if they could just as easily root around in a christmas tree farm? Wear some metal on the right spot and traverse a flux line the right way and your woman really will shoot lightning out of her ass! (Or the man will...yech)

      I'm betting the dried, sharp pine needles can be a turn off.

    3. Re:Hm... by Chundra · · Score: 2

      I just wonder if they do this to avoid buying Alex Chiu's immortality devices.

    4. Re:Hm... by 4of12 · · Score: 2

      In California, the power companies lease the land under the high-power lines to things like nursuries and christmas tree farms.

      Hmmmm....

      With all those high voltage lines, do you think they'd mind much if my "farm" consisted of lots of inductive loops with which to scrounge some electricity?

      --
      "Provided by the management for your protection."
    5. Re:Hm... by BigBlockMopar · · Score: 2

      Stupidity and the consequential belief in superstition. Same things about salt over one's shoulder, not stepping on cracks, walking under ladders, etc.

      Or the paranoid delusion that an invisible, omnipotent man is watching you whilst you engage in the process of expelling feces. And all the deaths which can be attributed to that particular delusion throughout human history.

      Re: magnetic north. I'm looking forward to a Darwin Award for someone who freezes to death on a procreational trip up there. I had to go to Baffin Island once on business. Never, ever again.

      --
      Fire and Meat. Yummy.
    6. Re:Hm... by kesuki · · Score: 2

      Not only does the Van allen radiation belt shelter the earth, the particles get funneled towards the poles. DNA generally has a pretty good track record for error correction, but yes, a chance collision with a high energy particle can cause a shift. This isn't always bad, but it's about the equivalent of growing corn in a field of uranium and hoping for mutations that cause a desireable effect.
      If you want a better genome the only way is to engineer it yourself.

  4. Conception...Copulation by jmu1 · · Score: 2

    Well, I had to be the one to say it... "Hell people, there isn't really that much to do up that far North but copulate!"

  5. Desperate People... by FortKnox · · Score: 2

    The honeymooners did not make the trip, but other couples, also believing that the location nurtures fertility, have chartered small planes to the forbidden spot, set up tents on the ice and conducted their business.

    Its a wonder you don't find slummy hotels with free porno channels at the spot...

    --
    Good quote, too many chars. Seriously, the slashdot 120 char limit sucks!
  6. Christmas in 500 years by Lxy · · Score: 2

    So, if the north pole is shifting that far, that fast... will the Canadian children see any change in Santa's normal delivery schedule? I can only assume he'd be a little later than normal, seeing as how Siberia is quite a flight from Northern Canada.

    --

    There is no reasonable defense against an idiot with an agenda
    :wq
    1. Re:Christmas in 500 years by maggard · · Score: 2
      ... seeing as how Siberia is quite a flight from Northern Canada.

      Yeah, about an hour or two by air depending on how and where you plan to land. Stop looking at those silly Mercator Projection maps and get something that shows northern latitudes a bit more accurately, or invest in a globe.

      --
      I don't read ACs: If a post isn't worth so much as a nom de plume to its author then I wont bother either.
    2. Re:Christmas in 500 years by Lxy · · Score: 2

      It's OK, I'm karma capped anyway.

      /. karma math: 50 + 4 - 1 = 49

      --

      There is no reasonable defense against an idiot with an agenda
      :wq
  7. Children with three heads, 12 fingers, and a tail by BierGuzzl · · Score: 2

    Let's just hope that north pole doesn't head into any nuclear weapons testing zones up in Siberia... we could be looking at some pretty freaky looking babies!

  8. Hopefully it slows...... by Ryan_Terry · · Score: 3, Interesting

    ...or airport painting crews will be staffing up:

    Magnetic North Keeps Moving

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  9. Does this mean by Jin+Wicked · · Score: 2, Funny

    I won't be able to write Santa Claus anymore at

    Santa Claus
    North Pole
    Canada, HOH0H0 ...?

    Then again, maybe that's not such a bad thing. This past Giftmas my boyfriend wrote him asking for his list of naughty girls. Thankfully all he got back was a form letter. ;)

    --
    My Webcomic: Asylum on 5th Street
  10. that's not bad by laserjet · · Score: 5, Insightful

    This is just a natural movement of the pole, that's what it does.

    Does anyone else remember from college how the poles just flip every million years or so, and no one really knows why? That whay *I* am worried about. the poles moving just a little bit is fine with me.

    but if the poles just flipped, imagine what chaos it would cause. Would we have to relabel all the maps that are made? Many airplanes could not fly (with older instrumentation). Thankfully, GPS should still work..

    Here's the main point of the article for those too lazy to click and read:

    If the pole follows its present course, it will pass north of Alaska and arrive in Siberia in a half century, but Newitt cautioned that such predictions could prove wrong. "Although it has been moving north or northwest for a hundred years, it is not going to continue in that direction forever. Its speed has increased considerably during the past 25 years, and it could just as easily decrease a few years from now," the geophysicist said. The erratic pole can jump around considerably each day, but migrates on average about 10 kilometers to 40 kilometers each year.

    --
    Moon Macrosystems. Sun's biggest competitor.
    1. Re:that's not bad by dattaway · · Score: 3, Funny

      Don't worry about the navigational chaos drifting magnetic poles cause, just think what would happen if the North Magnetic Pole ended up on the Equator somewhere.

      Would Santa and his elves relocate to Central America? Christmas in Bermuda?

    2. Re:that's not bad by Verteiron · · Score: 2, Informative

      15 seconds of Google research will tell you that the pole reversal is thought to take 1000 years or so to complete. So it's not like you'll wake up some morning and magnetic North will suddenly be South.

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    3. Re:that's not bad by Fweeky · · Score: 4, Insightful

      > Does anyone else remember from college how the poles just flip every million years or so

      No, that was far too advanced for my college :)

      I'm not so bothered by it flipping; I'm bothered by the suggestions that in the process of flipping the field weakens and practically disappears.

      It's one thing to think "N is S, and S is now N", it's quite another to think "my compass is useless, and I'm probably going to get cancer from the next solar mass ejection because there's no magnetic field to offset all those high energy particles".

    4. Re:that's not bad by laserjet · · Score: 4, Funny

      Hey! I never said I went to a good college!

      --
      Moon Macrosystems. Sun's biggest competitor.
    5. Re:that's not bad by gilroy · · Score: 5, Interesting
      Blockquoth the poster:

      but if the poles just flipped, imagine what chaos it would cause


      The orientation of the field doesn't really matter too much. I mean, we'd have to relabel compasses, etc., but no big deal.


      But ... during the reversal, the magnetic field actually fades to (essentially) zero, and does so for a noticeable length of time. In that circumstance, the Van Allen Belts disappear and the surface no longer has its usual protection from solar wind, cosmic rays, etc. That's the time to worry.

    6. Re:that's not bad by Kombat · · Score: 5, Informative

      Whoops, guess I should have used the "Preview" button. Corrected post follows:


      but if the poles just flipped, imagine what chaos it would cause. Would we have to relabel all the maps that are made?

      Aeronautical maps are re-issued every 4-5 years anyway, because of this natural drift. Pick up any aviation chart and look for the curving lines called "deviation lines." These are used by pilots to convert from magnetic heading to true heading. Since the poles move, the lines also move, and the charts are re-printed periodically. This isn't a big deal, since other things change over time too, as new airports are added, and airspace is re-classified.

      Incidentally, if the poles flipped, older planes wouldn't have any trouble navigating. All planes have at least a basic instrument navigation system to direct them to fixed radio beacons. Even most older planes are fitted with relatively modern (<10 years old) instrument navigation systems (IFR).

      A relatively more significant issue to worry about are the runways themselves. The numbers on the ends of runways are the first two digits of the magnetic heading corresponding to the runway direction. If the poles flipped, these numbers would all have to be updated.

      The "chaos" that we'd have to worry about would actually be in relation to the radiation shielding provided by the Earth's magnetic field. If the poles were to switch, it's not the kind of thing that happens instantaneously. It could take years, even decades for the switch to complete, and in the interim, we would be vulnerable to harsh radiation from the Sun. Aside from the obvious effects to our health, this could disrupt power grids and disable magnetic storage media. THAT is what you should be worried about.

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    7. Re:that's not bad by csbruce · · Score: 2

      Would Santa and his elves relocate to Central America? Christmas in Bermuda?

      Santa would be at the true north pole.

      BTW, I've heard people say that the true north pole is actually part of Canada as well. Maps such as this one show Canada's territory extending to the true north pole, but one might expect the infinitesimally small point to be divided between Canada, Russia, Norway, and Denmark (Greenland). Is the true north pole really part of The True North Strong And Free?

    8. Re:that's not bad by Rogerborg · · Score: 2
      • Does anyone else remember from college how the poles just flip every million years or so, and no one really knows why

      It's 250,000 years, and (some people will tell you) the field is winding down a bit right now, which is rather a bad thing unless you happen to have a cosmic ray proof bunker.

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    9. Re:that's not bad by barawn · · Score: 2

      No, the magnetic field doesn't allow the VAST majority of charged particles inside the magnetosheath at all. If it goes away, huge numbers of particles now enter the Earth's magnetosheath (atmosphere, etc.).

      So, to answer your statement, if the flux of particles that DON'T hit you is orders of magnitude higher (probably around 10^9 or higher) than the particles that DO hit you, would YOU want to flip those numbers around (so now the number of particles that DO hit you is 10^9 times higher than the number of particles that DON'T hit you)? Obviously not.

    10. Re:that's not bad by barawn · · Score: 5, Informative

      The magnetic field of the Earth is due to a highly spinning core of liquid ferrous material (the "dynamo effect") - that is, sustained electric currents set up a magnetic field. Pole movement and pole reversal are two different things (and probably completely unrelated to each other). What causes pole reversal isn't very well understood - there're some good theories, but until we know more about the inner structure of the Earth, no good solid evidence (the dynamo effect, it should be noted, isn't well understood either! Mars wasn't supposed to have a magnetic field - no liquid core - and Mercury wasn't supposed to have one either - spinning too slow - but they both do, and Mercury's is quite noticeable) as far as I know.

      There isn't really a good qualitative description of what's going on, but basically, the core of the Earth is a spinning liquid ferrous object which is highly conducting, and sets up huge currents which produce huge magnetic fields. These magnetic fields can get "trapped" in a convective layer above the core (and become "earthspots", in analogy to "sunspots"). The sunspots act to cancel out the conductive field (the dipole portion) which weakens the field. These perturbations can cause the conductive region to 'flip' to the other polarity (there are two spots of stability, one with + polarity, one with - polarity: if you 'push' the magnetic field enough away from the original, you can shove it to the opposite polarity) which then begins to cause sunspots of its own, and the cycle continues.

      The field recovers basically because there are two magnetically generating 'layers' - the core, and the convective region. They, together, cancel each other out, but because the core generates the convective region, the magnetic field is only zero so long as the polarities of the convective region and the core are opposite and equal (which doesn't last 'long' on a cycle scale).

      This is all assuming everything works like the Sun does, which is assumed, but not entirely sure. :) The Earth's period is roughly 250,000 years, and the Sun's is 22, so as you can guess, we have a lot of data about the Sun's, and virtually none about the Earth's. :)

    11. Re:that's not bad by delcielo · · Score: 2

      So. What would that mean for the water in my toilet?

      --
      Hot Damn! It's the Soggy Bottom Boys!
    12. Re:that's not bad by randombit · · Score: 2

      I'm not so bothered by it flipping; I'm bothered by the suggestions that in the process of flipping the field weakens and practically disappears.

      It's one thing to think "N is S, and S is now N", it's quite another to think "my compass is useless, and I'm probably going to get cancer from the next solar mass ejection because there's no magnetic field to offset all those high energy particles".


      [I'm actually in a class that discussed this last week; hows that for relevance :)]

      Humans were around during the last pole flip, and it seems from what we know about how they lived, they did not suffer any ill effects from extra radiation, etc during the transsision time.

    13. Re:that's not bad by gordguide · · Score: 2

      "... A relatively more significant issue to worry about are the runways themselves. The numbers on the ends of runways are the first two digits of the magnetic heading corresponding to the runway direction. If the poles flipped, these numbers would all have to be updated. ..."

      Normally you would think so. But remember, this is Aviation we're talking about. Speed and distance: knots and miles per hour. Official Language: English. Fuel management: Pounds (converted to gallons or litres by weight). GPS? Illegal to use as a primary navigation device (only recently "officially" allowed in the cockpit, now allowed as a backup only). The world's aviation authorities make the average government committee appear to move at the speed of light.

      In other words, they wouldn't waste a drop of paint on it; they would just declare the old Mag Pole the standard (and would probably take 6 years to "study it"). In the meantime, calibrate your compass card and plot a course on your map with a pencil.

      Good landing: any landing where you can still walk from the aircraft.
      Excellent landing: any landing where you can still fly with the aircraft.

    14. Re:that's not bad by mgblst · · Score: 2

      Does anyone else remember from college how the poles just flip every million years or so, and no one really knows why? That whay *I* am worried about. the poles moving just a little bit is fine with me.

      And Australia would be on top of the world. We could say, "how is it down under?" to all of you!

    15. Re:that's not bad by Jerf · · Score: 2

      "Does anyone else remember from college how the poles just flip every million years or so, and no one really knows why? That whay *I* am worried about. the poles moving just a little bit is fine with me."

      I'm sure that somehow, it's the fault of Mankind. Maybe we're polluting the air with magnetically active pollution. Or perhaps we're destroying the poor magnetic lines of force's environments. All I know is that I'm sure it's us, somehow.

    16. Re:that's not bad by DarkProphet · · Score: 2

      Probably nothing. The water spinning in your toilet is a result of the Earth's rotation, not its magnetic field. Though if the magnetic field changes (poles shift), you could end up with slighly rustier toilet water.. hehe

      --
      What could possibly hurt the security of the American people more than giving our own government the ability to hide its
    17. Re:that's not bad by DunbarTheInept · · Score: 2

      Face your TV set east - look at it.

      Now face it west - look at it.

      Notice any change in color? No? Then what makes you think a field shift would affect it?

      --

      Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

  11. But seriously now... by WndrBr3d · · Score: 2, Funny

    Can we blame it ?

  12. I'm moving to Mexico... by Anonymous+Canadian · · Score: 3, Funny

    First the Canadian dollar heads south, then the north pole heads north.

    Soon enough our beer will start tasting like that weak, watery American beer.

    1. Re:I'm moving to Mexico... by gatekeep · · Score: 2, Informative

      The north pole heads north? I don't think that's possible. Seems to me the north pole can only head south, no matter what direction it's going in.

  13. Take a reasonably uninteresting story... by fruey · · Score: 3, Interesting

    ...post comments about the conception part, and watch 50% or more of posts go on about their kids being conceived there, shagging in ice and all that.

    The CNN article, apart from giving fodder to go on about Arctic Sex, is uninteresting. Nothing scientific about it, just pure, watered down, stretched out simple fact.

    You could write it like this:
    The North Pole is moving. People might go and look at it. Some even conceive there.

    That's it.

    --
    Conversion Rate Optimisation French / English consultant
  14. Typical CNN by gordguide · · Score: 2

    The Mag Pole is moving all the time. There is absoutely no way to predict for certain where it may go next.
    Apparently CNN takes pure speculation as predicting the future. It could just as easily end up in Atlanta, or (as has happened before in Earth's history) abruptly switch polarity and end up in Chile or the South Pole.

    "... The honeymooners did not make the trip, but other couples, also believing that the location nurtures fertility, have chartered small planes to the forbidden spot, set up tents on the ice and conducted their business. ..."

    Umm, that's "forbidding", not "forbidden". Go there anytime ya want.

  15. For some values of "many" by maggard · · Score: 4, Interesting
    ...many couples like to go to the magnetic North Pole to conceive their children
    Many?

    What - 5, 6? Perhaps a dozen a season? On a planet of 6 billion folks that's "many"? That isn't even a lot compared to any other notable location: How many kids have been conceived within a few km of Niagara Falls by honeymooners? Or what about all of the Asian folks intentionally born in supposedly "lucky" years?

    By the way, for only having 200 fulltime inhabitants tourism is a major industry in Resolute Bay with 4 hotels, several charter airline services and a number of tour operators. That the occasional couple decides gave a go at it near the magnetic pole is hardly surprising nor are the numbers unexpected.

    --
    I don't read ACs: If a post isn't worth so much as a nom de plume to its author then I wont bother either.
  16. My OnStar in 50 years... by switcha · · Score: 4, Funny
    adjust your compass daily

    "Hello OnStar, how may I help you Mr. Jones?"

    "I think I'm lost. I need to get downtown. Can you tell me where I am?"

    "It says you are 10 miles out in the Pacific, Mr. Jones. Do you need assistance?"

    --
    You know what? ... A little club soda *did* get that out!
    1. Re:My OnStar in 50 years... by rehannan · · Score: 2

      How exactly to you get a car 10 miles from any metal object when the car itself is metal? That 10 miles figure is very suspect to begin with.

    2. Re:My OnStar in 50 years... by Decimal · · Score: 2


      "Hello OnStar, how may I help you Mr. Jones?"

      "I think I'm lost. I need to get downtown. Can you tell me where I am?"

      "It says you are 10 miles out in the Pacific, Mr. Jones. Do you need assistance?"


      Poor Batman. The Joker's gonna have a hayday with this one.

      --

      Remember "Bring 'em on"? *sigh
    3. Re:My OnStar in 50 years... by maggard · · Score: 2
      According to the owner's manual (if I remember correctly), in order to recallibrate the compass, you first had to move the car to position at least 10 miles from any metal object!

      Bullshit.

      No consumer-level magnetic compass device is sensitive enough to detect metal more then a few meters away, certianly not more then 10m. Furthermore something designed to operate in the challenging environment of a car is not going to be all that responsive to local or transient conditions.

      Doubtless what you are misremembering (and clearly didn't think through either) was that one would need to drive some distance between points to calibrate the compass by creating a sufficiently long baseline. Metallic objects would have had little or no effect, certianly parking 10m or so from other vehicles or structures would have been more then sufficient.

      Reading for Comprehension: It works for others...

      --
      I don't read ACs: If a post isn't worth so much as a nom de plume to its author then I wont bother either.
  17. It has been drifting nothward for decades... by somethingwicked · · Score: 2

    It has been drifting nothward for decades

    This line just hits me as inherently funny, given the subject.

    The slashdotted site became more slashdotted
    CmdrTaco REALLY starting liking anime
    ACs posted even stupider comments including the word stupider...

    I KNOW, I KNOW...magnetic vs. true, etc. But its still funny

    --

    ---"What did I say that sounded like 'Tell me about your day?'"---

  18. scenic Resolute by AdamBa · · Score: 2
    This is slightly OT but I love reading this site for the pages about the various towns up in the Canadian arctic...here is the one on Resolute.

    They even have an ISP up in Nunavut...in fact Wired had an article about net access up there in the permafrost.

    - adam

  19. Re:Moving Magnetic Pole? by Binky+The+Oracle · · Score: 5, Funny

    How, exactly, can the North Pole drift northward?

    Seems like it would be more accurate to say that Siberia is drifting northward and North America is drifting southward.

    WE HAVE TO STOP THIS NOW! At this rate, North America will be South America, environmentalists will be warning about the dangers we face when the Jamaican ice sheets collapse, and Australia will be located somewhere near the moon.

    --

    Slashdot comments... splitting hairs since 1997.

  20. North Pole Moving? by athakur999 · · Score: 3, Funny

    So what, does this mean "Rudolph the Red Nosed Reindeer" is now just "Rudolph the Red"?

    --
    "People that quote themselves in their signatures bother me" - athakur999
  21. Aurora by istartedi · · Score: 2

    Will this make it harder to see Northern Lights in Canada, and easier to see them in Siberia?

    --
    For all intensive purposes, "whom" is no longer a word. That begs the question, "who cares"?
  22. The interesting thing to me is.. by Carmody · · Score: 2

    ...how people are going to be able to blame it on Bill Clinton.

    --
    God is real unless declared integer
  23. Re:can't blame it by Bob+McCown · · Score: 5, Funny
    Maybe it's tired of Canada's 4 seasons:

    Almost Winter, Winter, Still Winter, and Highway Construction

  24. Where it's been by Wanker · · Score: 5, Informative
    For the more visually inclined, I ran across this plot of the movement of magnetic north since 1831.

    1. Re:Where it's been by 56ker · · Score: 2, Informative

      This plot goes back quite a bit further - to 1000 AD. To see it click here.

    2. Re:Where it's been by ckedge · · Score: 2


      Holy cow, look at this snippet:

      When scientists plot the position of the magnetic north pole on a map, they plot its average position. Not only does the pole change its location over years and decades, but it also travels in a roughly elliptical path each day. This daily wandering can take the pole up to 80 km from where it is plotted!

      I never knew that!

  25. I Don't Blame The Pole by DeadBugs · · Score: 2

    With the taxes on digital storage I would leave Canada too.

    --
    http://www.kubuntu.org/
  26. Re:There was shrinkage by Micah · · Score: 2

    You can fly commercial to Resolute, but it's dang expensive (several hundred dollars to even Yellowknife or Iqualuit). I actually want to go up there sometime just for the heck of it.

  27. Save The North Pole! by TWR · · Score: 2
    Clearly, this is related to global warming, the ozone hole, and all other evils created by White Men.

    REDUCE FOSSIL FUEL USE TO SAVE THE NORTH POLE!

    -jon

    --

    Remember Amalek.

  28. Ah, by Gannoc · · Score: 2

    many couples like to go to the magnetic North Pole to conceive their children.

    Many couples are pretty stupid.

  29. Re:Booooo (and offtopic) by joshjs · · Score: 2

    For what it's worth, most Wisconsinites I know associate the things you mention with Minnesotans.

    For what it's worth.

  30. Leaving Canada, eh? by Salamander · · Score: 2

    Don't pay attention to what they say the reasons are. It's the taxes.

    --
    Slashdot - News for Herds. Stuff that Splatters.
  31. Shifting poles = mutations by Mad+Quacker · · Score: 2, Interesting

    From what I've read, every time the poles have shifted there has been a great period of mutation/evolution, since the magnetic shield that protects us from solar radiation is weakend or dissappears completely until the pole settles into its new position. I think the next one or two generations will find out for sure :)

    I don't have an sources to link to of the top of my head, anyone else?

    --
    "I don't know that atheists should be considered citizens, nor should they be considered patriots." George HW Bush
  32. Complaints by dago · · Score: 2

    Please don't tell NBC !!!

    Otherwise, they will convince god to give a magnetic north pole to both Russia and Canada.

    (now, I can read the other posts to see how many people replied that ;)

    --

    --
    #include "coucou.h"
  33. Canada's Reaction by dbretton · · Score: 2
    In a follow-up story, Canadian scientists are puzzled at the problem with the North Pole moving.

    "Quite honestly, eh, we are unsure what dis is all aboot", says Dr. Ock E. Puck.

    "I doon't know why, but it's moving pretty fast now, eh"

    Canada's government is making swift efforts to entice the pole to stay. Currently in the works are:
    Tax-breaks for Tesla-enducing corporations
    Affordable shielding programs
    and a bill to allow for the marriage of poles of the same orientation.

  34. Wandering shmandering by Rogerborg · · Score: 2

    Every 250,000 years or so, the whole thing reverses polarity. And it's winding down right now, which is possibly a sign that we're due for another one. Don't invest too heavily in homing pigeons. ;-)

    --
    If you were blocking sigs, you wouldn't have to read this.
  35. Why do so by Martin+S. · · Score: 2

    many couples like to go to the magnetic North Pole to conceive their children
    ?

    It must give the offspring a magnetic personality :)

  36. Shocking News by dbretton · · Score: 2

    In a related story, the DoJ has uncovered corporate email from top executives in Microsoft indicating that the movement of the magnetic North Pole is part of a large-scale strategic initiative to corner the navigation software industry.
    Bill Gates intends to migrate the Pole to Microsoft headquarters in Redmond, WA, at which point MS will claim corporate ownership of said pole.

    Microsoft: We'll Tell Where to Go Today.

  37. More info: by Alien54 · · Score: 2
    There is this page with interesting info, legit theories, and pretty pictures

    For a comparion of magnetic pole shift vs other theories of polar and crusty disturbance, check out this page which picks apart the psuedo science of it all. There are a lot of wacko theories on what pole shift means, and a lot of it is based on lack of evidence and mis-conceptions.

    It is intereting to note that, the earth's core is rotating faster than the surface crust to begin with.

    There is this concern: The magnetic field acts as a shield against solar particles, etc. No field = no shield. Weak field = weak shield. This could be an issue with solar flares. Some folks are concerned that the field may be in the process of failing

    Also, if the poles were to flip suddenly, many creatures that navigate magnetically could be affected. A full magnetic reversal could cause massive ecological problems across the whole of the Earth. If this took place slowly enough, each generation of creatures would learn to navigate with its' current situation.

    --
    "It is a greater offense to steal men's labor, than their clothes"
  38. Re:compass? by slykens · · Score: 2
    do gps handheld units use a digital compass based on a floating iron point? or do they recieve gps cordinates and derive your direction from that somehow?

    It is always going to be digital and calculated based on your position, but whether you want geographic north or magnetic north is up to you and the user typically can select which they want. The GPS receiver can be told where magnetic north is and calculates direction just the same as it would for true north.

    I remember my Garmin knew that my magnetic deviation is 11W in central PA. Altho the $64,000 question is: Is there a way to update the position used as magnetic north in the GPS receiver so that it will be accurate in 10 years? Or for someone how knows better than I, does the GPS data stream include/can it include this information?

  39. Re:North = South = North by ZaneMcAuley · · Score: 2, Interesting

    So, if the magnetic poles do swap. Would that mean all aeroplanes fly upside down due to the software bugs :D There was a story about that one in a Figher plane that crossed the Equator and got confused and rolled over upsidedown :D

    --
    ----- Whats wrong with this picture? http://www.revoh.org:1234/whatswrong
  40. Natural Viagra? by Anonymous Coward · · Score: 2, Funny
    Perhaps the couples are just trying to get a stronger reading to help the "needle" point "north"?

    Dear, take me to the pole!

  41. Wonder what Santa's reaction is? by WillSeattle · · Score: 2

    Maybe he'll get over being a dual citizen like me after a few years. Since the North Pole will be in Alaska soon.

    A warning though - the US is still the only country in the world not to use metric, all the dollars are the same color, and they don't use the u in words like colour or spell centre correctly.

    On the plus side, he can cut back on all those bilingual training courses - but he might want to pick up some Spanish just in case.

    And it might take longer to make Rudolph's nose red - the beer, cider, and wine down here is awful weak to Canadian tastes.

    Wonder if he'll have any problems with the NAFTA and Free Trade forms - occupation: Santa - is that a professional skill?

    -

    --
    --- Will in Seattle - What are you doing to fight the War?
  42. Re:compass? by EllF · · Score: 2

    A floating iron point would not be a digital compass. :)

    As far as I know, GPS units calculate direction by triangulating the unit's position in relation to the 24 orbitting GPS space segment satellites. Each satellite transmits its own known position, the current atomic time, system status, etc., and also sends a pseudorandom navigation (PRN) stream.

    The handheld receives a nav signal and PRN stream, and then generates its own PRN, using the current time as the seed. It then adjusts (looking for a pattern match) for the difference (thanks to the delay in transmission time) between the signal and the satellites PRN. This offset lets the GPS determine how far it is from a given satellite.

    The handheld repeats this for another satellite, giving it two spheres that overlap, with the overlapping area being where the GPS must currently be. A third satellite is contacted, resulting in two possible points; one will be far, far "above" the satellite, so the GPS unit discards it. The remaining point is your current location. There *is* actually a fourth calculation (you can't determine 3 unknowns with only 3 variables, after all), which is a time-averaging based off the each of the satellites contacted, but many GPS units "fake" this by assuming that the unit is always at sea level.

    That triangulation allows the GPS receiver to determine direction freely; the signals it receives give it enough axises of direction to do this, I believe. Anyone a bit more versed in geometry than me want to clear this up?

    --
    We who were living are now dying
    With a little patience
  43. Conceived at the North Pole = bad idea by Caractacus+Potts · · Score: 3, Funny


    many couples like to go to the magnetic North Pole to conceive their children.

    I've met some people who were conceived at the North Pole. None of them seemed to have any direction in life.

  44. We must act by shimmin · · Score: 2
    I find it apalling that in the face of incontrivertable, indisuptable evidence that the magnetic north pole in fact moving, the industrialized nations of the world forge on in producing further electromagnet dynamos.


    From the great generating facilities in our hydroelectric plants to the tiniest servo in children's toys, our fascination with electric power that has led to these global changes must end.


    How can we in good conscience continue the use of these technologies, fully knowing their effect on our grandchildren?

  45. Re:It's the aurora man by david+duncan+scott · · Score: 2

    Wow, must be either tough tourists or wimpy wolves up there!

    --

    This next song is very sad. Please clap along. -- Robin Zander

  46. Northrip's Law by Just+Some+Guy · · Score: 2
    A corollary theory is that people tend to connect two inexplicable phenomena. At my college, a lot of Computer Science and Physics types referred to this as "Northrip's Law" in honor of the theory's leading proponent, the dearly departed professor John Northrip.

    One of his favorite examples was that people don't understand gravity, and they don't understand magnetism, so UFOs must be powered by gravity engines.

    --
    Dewey, what part of this looks like authorities should be involved?
    1. Re:Northrip's Law by Just+Some+Guy · · Score: 2
      Yes, I did. I had the privilege of taking PHY 204 with him, and my summer Thermo was the last class he taught. Everybody loved that man; he had to be the single most respected teacher I've ever studied under.

      Even his own mortality was something he was able to laugh about. One of my all-time favorite quotes came about when he started teaching something that he liked, but that wasn't on the syllabus: "I'm tenured and I'm dying. What are they going to do about it?"

      The world lost a truly brilliant teacher that year. My eyes are misting up now, even after all this time, to realize how much I miss him.

      --
      Dewey, what part of this looks like authorities should be involved?
  47. Who is to blame? by toupsie · · Score: 4, Funny
    This is an outrage! The movement of the magnetic North Pole is no doubt caused by the evil, big business policies of the US Republican Party. Their anti-magnetic stabilization agenda fueled by big time donations from "Special Interest Groups" is another reason that Congress should pass the Campaign Finance Reform bill currently pending. If we are not going to step up to the plate to protect the stability of the Earth's magnetic field, who will? President Bush? Please. We all know he hates the Earth and wants it destroyed today!!!

    Join Greenpeace and save the Earth's fragile magnetic stability!!!

    --
    Strange women lying in ponds distributing swords is no basis for a system of government.
  48. Trying to avoid taxes? by iabervon · · Score: 5, Funny

    What do they expect if they keep increasing taxes on magnetic media? The magnetic north pole is obviously going to want to move to somewhere cheaper, like Siberia.

  49. Money by mnordstr · · Score: 2

    So if the north pole moves over my backyard, can I sell tickets to people who want to visit it, or will it be public domain?

  50. Honk. Honk. by TheFlu · · Score: 3, Funny

    So when are geese gonna start flying North for the Winter?

  51. Re:can't blame it by rlowe69 · · Score: 2

    Maybe it's tired of Canada's 4 seasons: Almost Winter, Winter, Still Winter, and Highway Construction

    Ahhh city folk. We call Highway Construction (summer) Mosquito Season in the bush. After going through that, you can't wait for Almost Winter to start up again! ;)

    --
    ----- rL
  52. Obviously an effect of the brain drain by BluedemonX · · Score: 2, Funny

    First the doctors, then the nurses, then the software engineers, now the North Pole.

    Looks like EVERYONE who can is leaving Canada.

    Predictably, Jean Chretien denies that anything is wrong in any way whatsoever, and that more poles are MOVING to Canada than are leaving, resulting in a net pole gain.

    Of course, the Canadian Post Office are probably relieved by this - in a few years letters addressed to "Santa Claus" will no longer go to Canada Post - they'll be Siberia's problem. The Union is overjoyed! Less work! But they'll still strike for more money, mind.

    --

    --- Jump!! Fire!! Bullet time!! - Lego version of the Matrix
  53. new software development by mark_lybarger · · Score: 2

    does this mean we'll have a kewl place to congregate and put together some anti-dmca software, and make a few little hackers while we're at it?

  54. More Brain Drain by Titusdot+Groan · · Score: 2, Funny
    I'm distressed to see the North Pole Navigation Services considers Russia a better place to do business. Once again our socialist policies have forced another world class Canada company to relocate to friendlier climes.

    Good God! I just realized -- we could lose the Santa Claus Toy Manufacturing plants as well!

    The ignominy of it all.

  55. Re:can't blame it by nickynicky9doors · · Score: 2

    No one taking the Magnetic Pole from us. We went up and buried a looney under it. Now we not only know where it is, we're guaranteed to win every hockey game we play up there.

    --

    heuristic algorithm seeks stochastic relationship
  56. Re:What about the South pole? by crumley · · Score: 2

    Well, if the Earth's magnetic field were a perfect dipole then the north and south magnetic fields would be exactly opposite each other. Its not a perfect dipole (10% non-dipole ?), so they aren't exactly opposite each other. The shorter time-scale variations tend to be less dipolar. On longer time-scales, the poles do tend to stay pretty well attuned.

    --
    Preventive War is like committing suicide for fear of death. - Otto Von Bismarck
  57. Isn't it the magnetic south pole? by Florian+Weimer · · Score: 3, Interesting

    The compass needle points with its north pole end to the geographic north pole. IIRC, you call this end of the needle its "north pole" and mark it with an "N". Therefore, the magnetic pole in the northern hemisphere has to be a south pole, magnetically speaking.

    1. Re:Isn't it the magnetic south pole? by DunbarTheInept · · Score: 3, Interesting

      Actually, the compass is just deliberately mislabelled, I think. It's "N" doesn't mean "this is this the needle's north end", but "this arrow is pointing to the earth's north pole" It's the compass that's labelled backwad. It's easy enough to test - get a magnet labelled as N and S, and hold it up to the compass and see how it gets affected.

      --

      Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

  58. Re:Conspiration theory by mdwebster · · Score: 2, Funny

    You're crazy. The obvious reason they're doing this is to move the lucrative "conceive at the magnetic north pole" market to Mother Russia!! It's quite obviously a communist plot.

  59. Dear North Pole, by Anonymous+C0wherder · · Score: 2, Funny
    Take off Eh!

    You Hoser.

    Regards,

    Canada

  60. Re:can't blame it by Jester998 · · Score: 2

    Indeed, because 'almost winter' == 'hunting season'. :)

    That's the season where we show all these people that are saying "Who cares if the magnetic pole is moving? We have GPS!" how much a GPS is REALLY worth. Ever try getting a reading from a swamp? :)

    - Jester

  61. GPS doesn't give angles or direction. by DunbarTheInept · · Score: 2
    A GPS unit doesn't know which way you are facing. It can only tell you which way you *were going* by comparing positions as you move., not which way you are looking now. Also, the whole *point* of backpacking for many people is often the neat sense of "roughing it" by relying on your own self to get things done, and to navigate your way. Having a satallite tell you where you are ruins that fun if such fun is your goal.

    And, the notion that magnetic north doesn't need to be marked anymore because we don't need it for navigation is false even if it's true that we really don't need it for navigation anymore. Navigation isn't the only reason to bother keeping track of where magnetic north is. It's a scentifically interesting phenomenon to study, and it's real geographical information so why not put it on a map.

    After all, I don't really need to know what the shape of Baffin Island in Northern Canada is, since I'll never be going there, yet there it is, marked on the map? Why? Because the purpose of a map is to show you the geography that's really there, not *just* the subset of it that you find useful. Marking where magnetic north is on a map might not be as useful anymore, but that doesn't mean it should be removed from the map. If the map only contained things I actually found useful, it would be a very vague map. It wouldn't bother telling me, for example, what the ocean depths are, since I'm not going down there.

    --

    Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

  62. Because GPS tells you position not orientation by Goonie · · Score: 2

    GPS units can tell you your position with great accuracy, but they don't tell you which way north (or any other direction) is. To do that, you need a compass.

    --

    Any sufficiently advanced technology is indistinguishable from a rigged demo
    --Andy Finkel (J. Klass?)
  63. Distortion of article by goodie · · Score: 2, Informative

    Original article headline:

    North Magnetic Pole could be leaving Canada

    Slashdot article headline:

    North Pole is leaving Canada

  64. How would anyone notice? by DunbarTheInept · · Score: 2
    Radiation can damage people in such a way that they don't die immediately, but they get massive health problems several years later that kill them. Like those who had the misfortune of being near the Chernyobyl plant and now have all sorts of cancers and other problems.

    How would a culture that didn't have good medicine at the time even *know* that the radiation was causing problems? People must have been dying from undiagnosed health problems all the time anyway, even before the extra radiation.

    All we can tell from the evidence really, is that humans survived the event, and that it didn't create a massive dip in population reproduction. That still leaves open the possiblity that people had shortened lifespans during that time (but lived long enough to procreate), and possibly had very painfully unhealthy conditions to contend with.

    It takes a heck of a lot of radiation to cause total sterility. As long as that hasn't happened, the race can continue under conditions of extra solar radiation, but it won't be pleasant (and could lead to extra mutations, and thus the possible creation of more human races.)

    --

    Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

    1. Re:How would anyone notice? by DunbarTheInept · · Score: 2

      As far as population growth goes, a moderate number of extra deaths can be offset with extra breeding. It only becomes a noticable dip in population growth when the disease is on a very massive scale. After all, today those parts of the world with the least disease and famine are NOT the parts where population growth is highest.

      --

      Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

  65. International "waters" by DunbarTheInept · · Score: 2

    The real (axis or rotation) north pole is in no country. It's in international waters - or international "ices" to be more precise.

    --

    Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

  66. Republicans... by Catbeller · · Score: 2

    Republicans just don't do satire well.