【摘要】 简谐振动实验中用停表来测量周期,它用手动直接操作,精度不太高,其所测周期合成不确定度UC的数量级为10-3.为了提高精度,对弹簧振子传统的实验方法进行改进,该实验采用光电门来测周期.实验结果表明,用光电门测量弹簧振子的周期可以提高测量的精度,其合成不确定度UC的数量级可以达到10-4.更多还原

【Abstract】 Measuring cycle in the experiment of harmonic vibration by stopwatch results in the poor accuracy because of manual operation.In order to improve accuracy,we changed the traditional experimental methods of spring vibrator by using photoelectric door to measure cycle.The results show that it can improve the measuring accuracy by using photoelectric door to measure cycle.更多还原