"James Clerk Maxwell (1831-1879) changed our perception of reality and laid the foundations for many of the scientific and technological advances of the twentieth century. An unassuming and modest man, who simply wanted to understand how the world around him worked, he made fundamental contributions to every aspect of physical science. By discovering the nature of electromagnetic waves, he made possible the development of our great communications networks: television, radio, radar and the mobile telephone. He took the first colour photograph and introduced the system of thought experiments, later used by Einstein. His influence across all areas of physical science has been enormous. Often his ideas were ahead of his time and we had to wait many years before others confirmed his theories. "--BOOK JACKET.