Earths Hydro- magnetic energy and surrounding Vacuum?
154718
I am sorry this sounds just confused, and like total nonsense.
36195
Actually our geographic north is south pole of our big earths magnet and similarly with south....\n\nActualy it is just a convention we can consider anything as north or south,..... similar to positive and negative chages.\n\nRecently scientists have found that the earth's polarity is changing, while this process is going on there will be a break down in our earth's protective magnetic field.\n\nSo cosmic radiations can through earth's atmos.....\n\nFor this stage to sttain there is around a 1000 years to go.
167430
We do not really understand what causes the earth's magnetic field, but presumably it is caused by electric currents flowing in the earth, possibly as charged pieces of molten metal move around in the outer core. \n\nSo in this way, the earth's field is due to something more like an electromagnet, which is not destroyed by heat, instead of a permanent magnet, which is destroyed by heat.
1164491
Very much. Magnet has nothing to do with earth's magnetic north and south. It has it's own north and south and will very much attract like it does on earth. I think you are confused with compass which will not work in space with no north and south.
937894
The earth's electromagnetic field is caused by the spinning of the metal core of the earth.  As long as it spins, we will have a EM field.  \n  \nRelocation of the field would depend on the axis of the spinning core moving.  There is evidence that shows the magnetic poses wander, but this movement is relatively small.  Kind of like a top wobbling.  The angular momentum would make any major relocation very difficult to happen.  \n \nReversal of the field will happen at some time.  It has happened at semi-regular intervals in the earths past and there is nothing to indicate it won't happen again.  Compasses will point the opposite way, of course.  Perhaps some birds, fish, and insects will be disoriented by the reversal.  The only animals that might be affected by a field reversal would be the ones that migrate.    Unless there is a gap in the strength of the field during the reversal, allowing a large amount of solar radiation to reach the earth, there shouldn't be any major catastrophic events.
788348
All highly speculative give our limited time recording history.\n\nHowever, loss of circulation in the core would lead to loss of magnetic shielding and heavy flux of solar wind. It is believed this will make life very difficult for surface dwellers. Since the field is now weakening and is expected to pass through a minimum within the next few thousand years, we won't have to wait for hundreds of millions of years to find out!\n\nAlso given what little history we know, we expect that a few really big geologic shocks are in store before the end and our civilization isn't likely to make it through those. i.e. we're F'd before any of the really long term (and hard to predict) ends come about
578157
3200 Degrees C.\n\n"The outer core, which is responsible for the Earth's magnetic field, contains about 29.3% of the Earth's mass and has an average density of 12200-9900kg/m3 and temperature of 3200 degrees C."\nhttp://www.cobweb.net/~bug2/rock7.htm
804560
Theres all sorts of energy.  Out in deep space energy is created from nothing, stays for a few microthousandths of a second then disappears again.  We live in a sea of energy, its everywhere- kinda like the force.\n\nThe trick, is figuring out a way to tap into it.  Look up "Moray valve" on the internet- supposedly some guy named Moray figured out a way to tap into this energy back in the 1950's but nobody knows how
877741
Basically energy derived from steam or heat escaping from deep underground.  Kinda like harnessing "Old Faithful".\nHTH
756131
You asked a very good question. The fact is that vacuum or "empty space" is NOT empty at all. Scientists have recently confirmed that vaccum contains "energy" and the energy density has been measured to be on the order of 10^-29 grams per cubic cm or 10^-47 GeV^4.\n\nSince we all know that mass and energy are equivalent through Einstein's Special Relativity, so we can certainly say that vacuum contains some form of "matter".\n\nBTW, it has also been confirmed that the majority of our Universe's mass/energy density is due to the mass/energy density of the vacuum. As a matter of fact, vacuum is rsponsible for 73% of it. This vacuum energy is also called "Dark Energy".
486232
The universe is theorized to contain dark energy and dark matter. There have been some confirmation of it's existence but really just speculation at this point. The idea of dark matter had been identified by Einstein but it wasn't till the discovery that the universe is accelerating it's expansion and contains up to 70% more matter that the idea of dark matter and energy became serious areas of study. If you mean a vacuum to mean absence of air it is a vacuum but within that "vacuum" there definitely is matter.
1086242
I think all "matters" that spin have magnetic field. I believe magnetic field is basically causing earth to have north and south pole, allowing it to spin on its axis. Earth's moon, any moon, even Sun rotates, so, it's like all planets, stars, and moons have magnetic field.
1040095
heat radiation is possible in a vacuum, thats how the suns energy reaches us
1128220
Earth's magnetic field is fading. Today it is about 10 percent weaker than it was when German mathematician Carl Friedrich Gauss started keeping tabs on it in 1845, scientists say. \n\nIf the trend continues, the field may collapse altogether and then reverse. Compasses would point south instead of north.
129515
No, it shouldnt.\nRadiation can travel through a vacuum (for example, the way way the suns heat is transfered to the Earth).  Convection and Conduction however are prevented by a vacuum.
840444
The origin of the Earth's magnetic field is not completely understood, but is thought to be associated with electrical currents produced by the coupling of convective effects and rotation in the spinning liquid metallic outer core of iron and nickel. This mechanism is generally known as the dynamo effect. \n\nBecause of the rotating outer core,it produces an electric current, which in turn, produces a magnetic field that also interacts with the fluid motion to create a secondary magnetic field. Together, the two fields are stronger than the original and lie essentially along the axis of the Earth's rotation.
127673
Yes, if the magnetic field disappeared, there would be more radiation reaching the earth and this would cause adaptations to occur.  There's been some research into what has happened to plants and animals around the Chernobyl nuclear power plant in Russia that melted down and is still leaking radiation.\n\nNow, given that magnetic fields diminish and become spotty during magnetic pole reversal, some adaptation may occur but I'm not sure it will cause wholesale adaptation events.  These reversal events have occured about once every 5,000 to 50,000,000 years and larg land animals have survived for hundreds of millions of years so, yes, I think that they might be able to adapt quickly enough during some periods of low to no magnetic field.\n\nAlso, I think that ocean life will go relatively unaffected because water will help absorb some of this radiation.\n\nHowever, I'm sure some biologist or someone with greater knowledge than myself in this area will come along and prove me wrong. :^)\n\n-- \n\nAfter posting this, I read an article in March 2006 Scientific American on the problems of cosmic rays with respect to interplanetary space travel.  They noted in the article that it is a misconception that the magnetic field is the most significant form of protection from cosmic rays -- that it is the atmosphere itself that provides the greatest source of protection from cosmic rays.\n\nhttp://www.sciam.com/article.cfm?chanID=sa006&colID=1&articleID=000D6A37-E75F-13F5-A75F83414B7FFE9F