Originally published by Random House in 1966, this classic work is an indepth analysis of the pioneering work of Michael Faraday. Since Faraday was the major architect of field theory, the book focuses on the evolution of his ideas and their impact on the scientific community of the nineteenth century. The concluding chapter discusses the more mathematical contribution of James Maxwell, who was instrumental in turning Faraday's heresies into the orthodoxy of classical field theory.