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Signal Integrity Issues and Printed Circuit Board Design by Douglas Brooks

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Appendix B. Why Inductors Induct

Electromagnetic Concepts

There were four people who were particularly important in the development of electromagnetic theory. Their groundwork was crucial to the ultimate understanding of this complex topic.

First, Charles Augustin de Coulomb has been credited with Coulomb’s Law (1785) in which he stated that there are two kinds of charge, positive and negative. Like charges repel, and unlike charges attract, with forces proportional to the product of their charge and inversely proportional to the square of their distance.

Carl Friedrich Gauss is generally credited with stating that every magnetic pole is actually part of a dipole that includes an equal and opposite pole. One pole cannot exist without its opposite. ...

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