摘要
设想用磁场力悬浮天平刀口 ,以减小刀口摩擦力 ;用光放大和光电电位器检测平衡位置 ,用灵敏电流计的电流大小和指针偏转方向确定天平平衡状况 .
The use of magnetic suspension edge can reduce the impact of friction force. The optical amplification and photopotentiometer are used to check the balance position. The balance state is determined by the current value and deflection direction of galvanometer.The above imaginations can improve the sensitivity of the balance.
出处
《物理实验》
北大核心
2001年第9期46-48,共3页
Physics Experimentation
