Question
Sat August 18, 2012 By:

does light contributes to earth magnetic as it is an electromagnetic wave?

Expert Reply
Sun August 19, 2012
No earths magnetic field is due to earth core.
Light is an electro-magnetic wave. It does not mean that an electro magnetic wave causes any change in  the magnetic or electric properties of the space.
It is merely a disturbance in the electric or magnetic field through the space.
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