沉降法测定甘油粘滞系数实验的改进

通过对上海复旦天欣科教仪器有限公司FD-VM-II型落球法液体粘滞系数测定仪的改进,使沉降法测定甘油粘滞系数的实验结果更加准确可信.在原有实验基础上,制作一个小球投放器,使小球无水平速度,小球下落比较容易打上激光束,减小了实验操作难度.另外增加温度测量装置,充分利用了激光光电计时器,更容易判断出小球收尾速度是否匀速.

Improvement of Measuring Glycerol Viscosity Coefficient by Sedimentation

By improving Falling-ball method of FD-VM-II that make in Shanghai Fudan Tianxin limited company,measuring glycerol viscosity coefficient in sedimentation makes the result accuracy and credible.In original experiment foundation,we make in implement of a wire ball is put in that make the ball drop without horizontal velocity.The ball impacts easily laster beam,thus the experiment decreases operating difficulty.In addition,the experiment increases temperature measuring equipment,makes the best of laster beam photo-electricity timer,judge further and easily the ball’s terminal velocity that whether or not constant speed.