摘要
运用不确定度理论,推导了扭摆法测弹簧扭转常数的不确定度传递公式。通过应用塑料圆柱、金属圆筒和金属细杆三种不同形状的标准件来测量弹簧扭转常数,分析了影响测量弹簧扭转常数不确定度的几个因素,给出了减小实验误差的有效途径。
The uncertainty transfer formula of spring torsion constant is deduced with torsion pendulum meth- od. The main factors of spring torsion constant are discussed. By the analysis of the data from the experiments in which plastic cylinder,metal cylinder and metal rod are used respectively. The methods for decreasing the experiment uncertainty are obtained.
出处
《大学物理实验》
2015年第4期96-98,106,共4页
Physical Experiment of College
关键词
不确定度
扭转常数
扭摆法
uncertainty
torsion constant
torsion pendulum
