Earth's Magnetic Field Simulation

The Earth behaves as if a huge bar magnet sat inside it, tilted about 11° from its spin axis, with its south pole under the Arctic — which is why the north end of a compass points north. The field is described at any place by three elements: the declination (the angle between true north and magnetic north), the angle of dip (how steeply the field points into the ground), and the horizontal component B_H.

This Earth's magnetic field simulation shows a 3D globe you can turn, with field lines, the magnetic axis and the bar magnet inside. Move a probe to any latitude and longitude — or pick Delhi, Mumbai, Chennai or London — and read the dip, declination, total field and its horizontal and vertical components, with a dip needle and compass for that place. It covers Magnetism and Matter in Class 12 and the Earth's magnetism questions in JEE and NEET.