The Secret Life of Equations: The 50 Greatest Equations and How They Work

In his introduction, author and educator Cochrane (The Thin Veil of London) acknowledges that this brief survey of 50 famous equations—E = mc2, of course, but also equations that are the basis for calculus, electromagnetism, Google page rank, and rocketry—can’t get too technical or give readers a full understanding of how the equations work; whole books have been written about each of them. Cochrane covers 50 equations in a slim volume with many illustrations and photos, without the benefit of jargon or assumed knowledge. He writes that the book is intended to “make the general ideas plain and indicate ways in which those ideas can talk to each other, sometimes across widely different parts of mathematics, science and everyday life.” His work is best suited for students or other novices in the realm of math. Cochrane defines the terms of the equations and uses simple metaphors and examples to explain frequently daunting concepts. He also explains their applications in GPS technology, roller coaster design, financial markets, and pressure cookers, which may help readers gain a stronger appreciation of math’s relevance. Readers who want more depth will be left unfulfilled, but this starter guide will help them decide what to investigate in greater detail. (Oct.)