落球法测液体粘度实验的改进

Improving in measurement of viscous coefficient of liquid using falling ball

采用光电计时装置,对落球法测定液体粘度实验作了改进,减少了由手控计时引起的误差,提高了实验的准确度,扩大了测量范围.

The experiment of measurement of viscous coefficient of liquid using falling ball is improved by optical electronic timer. It decreases the error by using hand-controlled timer. Meanwhile it develops the students' mind.