Michael Faraday: Biography
Born: 22 September 1791
Died: 25 August 1867
To say that Michael Faraday is a giant in the history of science, and particularly in the history of electrical engineering, would actually be an understatement. A British physicist and chemist, Faraday discovered, among other things, the laws of electrolysis, electromagnetic induction (1831), hydroelectricity (1843), the relationship between electricity and gravity (1851), and atmospheric magnetism (1851).
Of all of these, electromagnetic induction was the most important. Without it power generation and power transmission would be impossible and the world we live in vastly different. Once Faraday discovered the principle of electromagnetism he was able to build the first electric motor, followed shortly after by the first generator and the first transformer. In 1832 Faraday demonstrated that three types of electricity thought to be different—that induced from a magnet, electricity produced by a battery, and static electricity—were in fact all the same. This led to great breakthroughs in electrical engineering. Faraday also introduced several words into our electricity vocabulary. These include ion, electrode, cathode, and anode. So powerful was his influence in the scientific arena that a unit of measurement—the “farad”—was named in his honor. The farad is the unit of measurement used for measuring capacitance. Capacitance is the capability of a device to store an electric charge.