The phenomenon of eddy currents has been around since the beginning of electromagnetism, but it wasn’t until the 19th century that it was observed and understood. The story begins with François Arago, who in 1824 noticed something peculiar. He observed that a rotating copper disk could cause a compass needle to move. This was the … Read more
The story of Motional EMF begins with the pioneering work of Alessandro Volta in the early 19th century. In 1801, Volta introduced the term “force motrice électrique” to describe the active agent of a battery, which he had invented around 1798. This term translates to “electromotive force” in English and marks the first use of … Read more
Lenz’s Law is named after the German physicist Heinrich Friedrich Emil Lenz, who formulated it in 1834. Lenz was not the first to notice the phenomenon of electromagnetic induction, but he was the first to provide a clear and concise rule for determining the direction of induced currents in conductors. The early 19th century was … Read more
The early 19th century was an era of rapid progress in understanding electricity and magnetism. Before Faraday, scientists like Hans Christian Ørsted and André-Marie Ampère had already laid the groundwork by discovering that electric currents affect magnetic needles and that currents could attract or repel each other. Michael Faraday, born in 1791, was not formally … Read more