在气垫导轨实验中,需要准确地测量和记录滑行器的运动时间,常用光电计时数显记录方法,即数字计时器计时方法。物理实验计时测量,计时精度很重要。有些计时仪器如J0201型数字计时器,能测到毫秒级,可靠位数到10ms以上。它可满足大多数物理实验测 In the air-guided track experiment, it is necessary to accurately measure and record the motion time of the gliders, and commonly used photoelectric timing digital display recording method, that is, the digital timer timing method. In physics experiment timing measurement, timing accuracy is very important. Some timing devices such as the J0201 digital timer can measure milliseconds, and the reliable number of bits is more than 10ms. It can satisfy most physics test