打开初中物理课本,开篇第一章即是“测量”。为什么学习物理首先要从测量学起呢?因为测量同人类日常生活、工农业生产以及科学实验都有着密切关系。在人们生活、生产以及科学实验中经常对一些量进行比较,如日常生活中去买布,售货员要用尺子量一下;去菜市场买菜、鱼、米等散装物品时,营业员要用杆秤或台秤或磅秤称一称;家中用电用水都用电表水表来记量;去医院看病,一般都要用体温表测体温;你想知道北京到上海有多远,先要在地图上量一量,然后根据地图上的比例尺进行计算;赛跑、竞走要测 To open a junior high school physics textbook, the opening chapter begins with “measurement.” Why study physics first must start with measurement? Because measurement has a close relationship with human daily life, industrial and agricultural production, and scientific experiments. In people’s lives, production, and scientific experiments, there are often comparisons of quantities, such as buying cloth in daily life. The salesman uses a ruler to measure it; when shopping for vegetables, fish, rice, and other bulk items in a market, the salesperson uses a steelyard or Bench scales or scales are called; household water consumption meters are used to meter; go to the hospital, generally use body temperature meter to measure body temperature; you want to know how far Beijing to Shanghai, first on the map one Quantity, and then calculated according to the scale on the map; race, race to be measured