unit pole Unit Converter

Definition of unit pole unit

The unit pole is an obsolete cgs electromagnetic unit of magnetic pole strength. It denotes a pole that, in vacuum, repels an identical pole one centimeter away with a force of one dyne.

History of unit pole unit

The unit pole arose within the centimetre-gram-second (cgs) electromagnetic system developed during the nineteenth century, when scientists sought descriptions of magnetism. Its definition followed Coulomb’s law for magnetic poles, assigning unit strength to poles separated by one centimetre and producing one dyne of force in vacuum. The concept became common in Gaussian and electromagnetic-unit literature, alongside gauss and maxwell. With the adoption of the ampere-based SI system, magnetic pole strength ceased to be treated as a quantity, and the unit pole survived mainly in historical texts, textbooks, and specialist discussions.

Applications of unit pole unit

Today, the unit pole has no active role in engineering standards, but it remains useful for interpreting historical magnetic measurements and older scientific papers. It may appear in discussions of Coulomb’s magnetic-law experiments, Gaussian-unit calculations, textbook problems, and conversions to SI quantities such as ampere per metre or tesla. Modern instruments and specifications use SI field and magnetization units instead.

Complete list of unit pole unit conversion