North-South asymmetries in the magnetic field imply that the magnetosphere ionosphere-thermosphere (M-I-T) coupling is different in the two hemispheres. In this paper we review the primary differences in the magnetic field at polar latitudes, and the consequences that these have for the M-I-T...
Introduction to The Earth’s MagnetismThe reason why, A bar magnet, when suspended freely, points in north - south direction is due to earth’s giant magnetic field. It is believed that the electric currents circulating from earth’s core to the space give rise to the earth’s magnetic ...
the magnetic field is not stable, and polarity reversals occur irregularly, on average once every 200,000 years. In other words, the North and South magnetic poles switch places.
the axis, where the ends of that magnet lie close to the geographic North and South poles of the planet. The magnetic field lines travel from the north pole of the magnet, looping back around to go back in toward the south pole. At each pole, the magnetic field lines are nearly ...
animals use Earth's magnetic field to create a personal map of their favorite spots, scientists. Some animals that migrate across the globe - such as birds, salmon, lobsters and sea turtles - are known to navigate using the magnetic field lines that stretch from Earth's north to south pole...
Earth’s Magnetism: Did you ever lose the sense of direction on any trekking? In such a situation, a magnetic compass will come to your rescue; we know that the magnetic needle of the compass always points north. If you hang a bar magnet from the ceiling, it will also point towards ...
field and Earth's. If the CME's magnetic field is aligned with Earth's, pointing from south to north the CME will pass on by with little effect. However, if the CME is aligned in the opposite direction it can cause Earth'smagnetic field to be reorganized,triggering large geomagnetic ...
direction to the magnetic force(iv)The shape of the Earth's magnetic field is as though there were a bar magnet at the centre of the Earth, aligned approximately on the North-South axis.If the plane flies west to east, but above the equator, the wing tips do not become charged.Explain...
Why do Earth’s magnetic poles move?© Alamy Though the Earth’s magnetic field is very similar to that of a bar magnet, with a north and south pole, it is not as stable because it is generated by complex processes inside the Earth. These cause the magnetic poles to wander....
A short bar magnet placed in a horizontal plane has its axis aligned along the magnetic north south direction. Null points are found on the axis of the magnet at14cmfrom the centre of the magnet. The earth's magnetic field at the plane is0⋅36Gand the angle of dip is zero. What is...