秒表是初、高中物理实验中的常用器材,可是我发现学生在使用秒表时读数往往存在着估读不准确的问题,在此提出来,请教师们注意。 目前我国各级各类中学配发的秒表多为机械表,如上海产的钻石牌502型、505型、803型;广东产的J0205型秒表最为多见。其表盘的设计一般都为10等分,每小格为0.1秒。 The stopwatch is a common device used in the physics experiment of primary and middle schools. However, I find that students often have problems with reading the inaccurate reading when using the stopwatch. At present, all kinds of secondary schools in China at all levels of the distribution of stopwatch are mostly mechanical watches, such as Shanghai-made diamond brand 502 type, 505 type, 803 type; Guangdong J0205-type stopwatch is the most common. The design of its dial is generally 10 equal parts, 0.1 seconds per cell.