Getting the most out of nature's laws — towards more efficient electrical and magnetic machines
Eric R. Laithwaite · Electronics and Power · 1984
Electrical and magnetic machines are all designed and built from experience. The so-called 'laws' that govern their behaviour are, of course, the laws of electromagnetic induction, but when it comes to making 'better' machines and, in particular, more 'efficient' machines, it is human ingenuity rather than a long computer program based on Maxwell's equations that tends to make the real progress.