In the physical reality, where is the electric field and magnetic field? Do they go up to infinity from the x-axis?
The picture uses vectors to depict the magnitude and direction of the field but we know that a vector can describe a property at just one point. What about other points?
In other words, I am asking what happens if I keep a super tiny compass at the points A, B, C in the above diagram.
*looking for good reference to understand electromagnetic waves (with derivations) with lot of illustrations
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