Fritzsch offers readers the opportunity to listen in on a meeting of Isaac Newton, Albert Einstein, and a present-day physicist. While he introduces the theory of relativity, Fritzsch teaches its sources, its workings, and the ways it has revolutionized our view of the physical world. An Equation That Changed the World dramatizes the importance of relativity, for the human race, and the survival of our planet. "Fritzsch could not give...