变间接测量为直接测量——物理实验课中刚体转动实验的改进

Improvement of Methods from Indirect Measure to Direct Measure

物理实验课是一种以直观教学方式为主的课程。实验项目的设计应体现直接演示物理量及变化过程的思想,而目前的刚体转动实验基本上是一种间接测量。为此,我们对实验进行了改进,改进后可直接对刚体转动的角速度、角加速度进行测量,并采用光电测时,避免了实验中的近似和偶然误差,使实验更加简洁、精确。

Object teaching is the most mode of the Laboratory physics course.The design of experiment must express the physics term directly. At present,Our rigid body revolution experiment is an indirect measurement.As the direct measune remains some defects,so some improvement is given to this epxeriment.Our test make the measurement become direct and exact。Thus the angular velocity and acceleration can be measured by direct test.