Fundamental physics, November 5th 2011 P93 (基本物理学入門書)
Previously the preserve of dusty, tweed-jacketed academics, physics has enjoyed a surprising popular renaissance over the past few years. In America Michio Kaku, a string theorist. has penned several successful books and wowed television and radio audiences with his presentations on esoteric subjects such as the existance of wormholes and the possibility of alien life. In Britain Brian Cox, a former pop star whose music helped propel Tony Blair to power, has become the front man for physics, which recently regained its status as a popular subject in Britain classrooms, an effect many attribute to Mr Cox's astonishing appeal. Mr Cox, a particle physist, is well-known as the presenter of two BBC television series that have attracted millions of viewers (a third series will be aired next year) and as a bestselling author and public speaker. His latest book, ゛The Quantum Universe゛, which he co-wrote with Jeff Forshaw of the University of Manchester, breaks the rules of popular science-writing that were established over two decades ago by Stephen Hawking, who launched the modern genre with his famous book, ゛A brief History of Time゛. Mr Hawking's literary success was ascribed to his eschewing equations. One of his editors warned him that sales of the book would be halved by every equation he included；Mr Hawking inserted just one, E=mc2, and, even then, the volume acquired a sorry reputation for being bought but not read. By contrast, Mr Cox, whose previous book with Mr Forshaw investigated ゛Why does E =mc2?゛(2009), has bravely sloshed a generous slug of mathematics throughout his texts. The difficulties in explaining physics without using maths are longstanding. Einstein mused, ゛The eternal mystery of the world is its comprehensibility,゛and ゛the fact that it is comprehensible is a miracle.゛Yet the language in which the world is described is that of maths, a relatively sound grasp of which is needed to comprehend the difficulties that physicists are trying to resolve as well as the possible solutions. Mr Cox has secured a large fan base with his boyish good looks, his happy turns of phrase and his knack for presenting complex ideas using simple analogies. He also admirably shied away from dumbing down. ゛The Quantum Universe゛is not a dry undergraduate text book, but nor is it a particularly easy read. The subject matter is hard. Quantum mechanics, which describes in subatomic detail a shadowy world in which cats can be simultaneously alive and dead, is notoriously difficult to grasp. Its experiments yield bizarre results that can be explained only by embracing the maths that describe them, and its theories make outrageous predictions (such as the existence of anti-matter) that have nevertheless later been verified. Messors Cox and Forshaw say they have included the maths ゛mainly because it allows us to really explain why things are the way they are. Without it, we should have to resort to the physicist-guru mentality whereby we pluck profundities out of thin air, and neither author would be comfortable with guru status.゛ That stance might comfort the authors, but to many readers they will nonetheless seem to pluck equations out of thin air. Yet their decision to include some of the hard stuff leaves open the possibility that some readers might actually engage in the slog that leads to higher pleasures. For non-sloggers alternative routes are offered：Messrs Cox and Forshaw used clockfaces to illustrate how particles interact with one another, a drawing of how guitar strings twang and a photograph of a vibrating drum. A diagram, rather than an equation, is used to explain one promising theory of how matter acquires mass, a question that experiments on the Large Hardron Collider at CERN, the European particle-physics laboratory near Geneva, will hopefully soon answer.
