Define Magnetic Field, Magnetic Meridian, Geographical meridian and magnetic equator.
Magnetic Field: The space surrounding the magnet, within which a magnet has its influence is called magnetic field.
Magnetic Meridian: A vertical plane passing through the magnetic axis of a freely suspended magnet is called magnetic meridian.
Geographical meridian: A vertical plane passing through a place and geographic north and south axis is called geographic meridian.
Magnetic Equator: An imaginary line, right bisecting the effective length of a magnet is called magnetic equator.