Simple Nature - Light and Matter

k / A summary of the derivative, gradient, curl, and divergence.11.5 Induced Electric Fields11.5.1 Faraday’s experimentNature is simple, but the simplicity may not become evident untila hundred years after the discovery of some new piece of physics.We’ve already seen, on page 598, that the time-varying magneticfield in an inductor causes an electric field. This electric field is notcreated by charges. That argument, however, only seems clear withhindsight. The discovery of this phenomenon of induced electricfields — fields that are not due to charges — was a purely experimentalaccomplishment by Michael Faraday (1791-1867), the sonof a blacksmith who had to struggle against the rigid class struc-684 Chapter 11 Electromagnetism