Which pole is north the powerful magnetic field of a neodymium magnet could demagnetize the needle, or even magnetize it in the opposite direction. Within the field of magnet therapy, the magnetic north pole south pole return from magnetic north pole controversy to biomagnet return to natural magnetism. Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with the magnetic field s pole near the earth's geographic north pole (see magnetic north pole) and the other magnetic field n pole near the earth's geographic south pole (see magnetic south pole. The magnetic field of a bar magnet is strongest at either pole of the magnet it is equally strong at the north pole compared with the south pole the force is weaker in the middle of the magnet and halfway between the pole and the center. Many times over our planet's history, earth's magnetic poles have reversed, meaning that sometimes a compass pointing north will be aimed at antarctica rather than the arctic this might sound.
The compass, an important device for navigation, has a suspended magnet which aligns parallel to the magnetic field produced by the earth and as a result points to the north pole the compass was documented as early as 1040 the ching tsung yao describes how iron can be magnetised by heating and quenching in water. Because the north pole has a magnetic field your paperclip is magnetic the pole is like a gigantic magnet the north pole is just acting like it's trying to pull the paperclip away from you. An introduction to magnetism when most people refer to magnetic north, or the north pole, they're talking about the geographic north area the magnetic field.
The magnetic field created by the molten core of the earth must have a magnetic south pole near the geographic north pole in order to attract the n end of our bar magnet and compass needles this south magnetic pole near the geographic north pole is sometimes called the magnetic north pole, even though it really isn't. The direction of the magnetic field at any point in space is the direction indicated by the north pole of a small compass needle placed at that point since electric current is a flow of charge the behavior of a compass needle in the presence of current carrying elements indicates that moving charges produce magnetic field. Field lines emerge from the north pole and go into the south pole the field lines are closest together at the poles, showing that this is where the magnetic field is the strongest the lines spread out from the poles, showing that the field is weaker in these regions.
Magnets are materials that produce magnetic fields, which attract specific metals every magnet has a north and a south pole opposite poles attract, while like poles repel while most magnets are made from metals and metal alloys, scientists have devised ways to create magnets from composite. On earth, applying that color scheme results in earth colored deeply red near its north pole and deeply blue near its south pole jupiter's magnetic field is strikingly different. Chapter 22 magnetism 221 the magnetic field if a compass is placed in a magnetic field the needle lines up with the field the north pole of the compass points. A north pole, then, feels a force in the direction of the h-field while the force on the south pole is opposite to the h-field in the magnetic pole model, the elementary magnetic dipole m is formed by two opposite magnetic poles of pole strength q m separated by a very small distance d, such that m = q m d. A magnetic flux 'flows' from pole to pole from south pole to north pole within a material, and from north pole to south pole in air the flux seeks the path with least resistance between the poles, which is why they form close loops from pole to pole.
Magnetic fields, though they can get pushed around (as we'll see later), keep their currents, and thereby their magnetism, in set places called magnetic field lines, running out of the south pole of the magnet and into the north pole since the currents are electrons and charged particles stay along magnetic field lines and do not jump around. The north magnetic pole is the point on the surface of earth's northern hemisphere where the planet's magnetic field points vertically downwards there is only one place where this occurs, near to (but distinct from) the geographic north pole. Magnetic field if no other magnetic fields are present as depicted in figure 2, the north pole of the compass points towards the south magnetic pole of the earth which is very.
Magnetic field lines diverge from the north pole of a magnet and converge on its south pole the strength of the magnetic field at any location is proportional to the density of the lines drawn magnetic field lines never intersect (since the field can only point in one direction at any location. Every magnet has two points, or poles, where most of its strength is concentrated these are designated as a north-seeking pole, or north pole, and a south-seeking pole, or south pole, magnetism: magnetic poles, forces, and fields | infoplease. Earth's north magnetic pole is shifting and weakening ancient lava flows are guiding a better understanding of what generates and controls the earth's magnetic field -- and what may drive it to.
One end of the magnet is called a north pole and the other end a south pole the force between a north and a south pole is attractive, whereas the force between like poles is repulsive the magnetic field is sometimes referred to as magnetic induction or magnetic flux density it is always symbolized by b. The magnetic north pole is where the earth's magnetic field points vertically downward the earth creates its own magnetic field from the electric currents created in the liquid iron-nickel core in order to illustrate the earth's magnetic field, three datasets for earth's magnetism have been created. A south magnetic pole might emerge over africa, for instance, or a north pole over tahiti weird but it's still a planetary magnetic field, and it still protects us from space radiation and solar storms. Thus, when you go somewhere to buy a magnet, don't buy a bipole magnet which has both north and south pole energy on the same side or a horseshoe magnet which does something very similar also, realize that different fields of magnetic use have different ways of labeling north or south poles.