The Universe and Dr. Einstein

One of the clearest, most readable books on Einstein's theories ever published, this much-acclaimed volume explores the problems Einstein faced, the experiments that led to his theories, and what his discoveries reveal about the forces that govern the universe. The concepts of relativity and the fourth dimension are explained in simple terms and discussed with all the vivid excitement of research into the unknown. Einstein himself, who wrote the Foreword, declared that "The main ideas of the theory of relativity are extremely well presented."