The field isn’t located at the north or south pole - you’re not 400km away from it, you’re immersed inside the field, and your compass is showing the local alignment of that field.
Just about anything with an EM field of its own will be stronger than that.
The field isn’t located at the north or south pole - you’re not 400km away from it, you’re immersed inside the field, and your compass is showing the local alignment of that field.
Just about anything with an EM field of its own will be stronger than that.