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度量史话:日益精确的“公尺”一个好的计量单位必须满足三个条件:便于直接测量(易于理解),与所测对象比例匹配(比如用英寸来描述地理距离就没有意义),并且稳定。克利斯先生为长岛纽约州立大学石溪分校的哲学教授、《物理学世界》杂志的专栏作家,其新作《悬而未决的世界》描述了人类对于计量“圣杯”的不懈探求。他笔下所展现的计量学史话显然不是引人入胜的阅读素材,但对其感兴趣的读者会爱不释手。
Measuring History: Increasingly Accurate “Metric ” A good unit of measurement must satisfy three conditions: for ease of direct measurement (easy to understand), to match the scale of the measured object (for example, it does not make sense to describe geographic distance in inches) And stable. Mr. Chris is a philosopher professor at Stony Brook University at New York State University in Long Island and a columnist for Physics World magazine whose new book, The Undocked World, describes humanity’s untiring exploration of the “Holy Grail” of measurement. His metrology history is obviously not a fascinating reading material, but readers interested in it will put it down.