Explain geographic meridian and magnetic meridian.
Explain geographic meridian and magnetic meridian.
$(i)$ Geographic meridian : Consider a point on the Earth's surface. At such a point, the direction of the longitude circle determines the geographic north-south direction, the line of longitude towards the north pole being the direction of true north.
Definition : The vertical plane containing the longitude circle and the axis of rotation of Earth is called the geographic meridian.
$(ii)$ Magnetic meridian (Definition): The vertical plane at a place on the Earth passes through the imaginary line joining the magnetic north and the south pole is called magnetic meridian.
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- [KVPY 2020]
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