Explain geographic meridian and magnetic meridian.

Vedclass pdf generator app on play store
Vedclass iOS app on app store

$(i)$ 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.

901-s76

Similar Questions

Explain angle of dip.

The lines joining the places of the same horizontal intensity are known as

Dip angle in vertical plane at an angle ${\cos ^{ - 1}}\,\left( {\frac{1}{{\sqrt 2 }}} \right)$ from magnetic meridian is $60^o$, then actual dip at that place

The magnetic field of earth is due to

If the dip circle is set at $45^o$ to the magnetic meridian, then the apparent dip is $30^o$. The true dip. of the place is