Oersted (unit)
The oersted (symbol Oe ) is the unit “electromagnetic” CGS with three dimensions of magnetic excitation or magnetic field.
The oersted, named thus in the honor of Hans Christian Ørsted, cannot be strictly compared with the corresponding unit of the international Système (IF), the Ampère per meter, because the IF is with four dimensions when one limits oneself to the mechanical magnitudes and electric. However, the oersted corresponds to 1000/(4π) A/m ≈ 79,577 471.545.947 A/m.
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