This web page allows you to convert the different magnetic permeability units and answers the following questions in particular: What is magnetic permeability? How is the history of magnetic permeability measurement connected to the understanding of magnetism? What are the six primary units used in measuring magnetic permeability, and what are they based on? What are the reference values for magnetic permeability in different units of measurement? How can different units of magnetic permeability be converted?
Magnetic permeability is a crucial concept in electric and magnetic fields. It is a measure of how a material responds to an applied magnetic field, and how efficiently it can store or produce it. Many materials possess magnetic properties, and the ability to measure the different degrees of permeability is required in order to relate to them.
The history of magnetic permeability measurement is closely intertwined with the understanding of magnetism in general. For example, in 1750 Charles François de Cisternay du Fay discovered two different types of electric charge, which would later be termed positive and negative - a milestone which paved the way for the understanding of the fields. Over the decades more and more progress was made in the understanding of magnetic phenomena, with the discovery of the moiré pattern in 1820, Faraday’s law of induction in 1831, and Ampere’s law in 1827.
When considering the measurement of magnetic permeability, there are six primary units which are commonly used: Henrys per meter (H/m), Teslas per ampere (T/A), Newtons per ampere squared (N/A2), Dynes per centimeter squared (dyn/cm2), and Gauss per oersted (G/Oe). Each unit is suitable for different applications, and is based on CGS and SI base units.
The reference values for magnetic permeability in different units of measurement are as follows:
Given that each unit of measurement for magnetic permeability is based on different base units, conversion between them is not a simple task. In order to convert between CGS and SI units, the following equation can be used: [H/m] = 4π x [T/A] = 4π x [N/A2] / 103 = [dyn/cm2] / 4π x 10-3
Similarly, conversion between CGS and Gauss is achieved by:[H/m] = [G/Oe] / 10-7.