Professor Marcus du Sautoy explores why we are driven to measure and quantify the world around us and why we have reduced the universe to just a handful of fundamental units of measurement. 　　BBC出品的纪录片，关于七个基本物理量单位的来龙去脉，讲述它们的起源、过去、现在和将来。七个基本物理量单位分别是：长度单位“米”、质量单位“千克”、时间单位“秒”、电流单位“安培”、温度单位“开尔文”、物质的量单位“摩尔”和发光强度单位“坎德拉”。