摘要
分别利用落球法和拉脱法测量了蓖麻油在不同温度下的黏度和表面张力系数;根据最速下降法,编制自动调参程序FIT,通过拟合实验测量数据,得到了描述蓖麻油黏度与表面张力系数关系的经验公式.
The viscosity and surface tension coefficient of castor oil are measured with falling-ball and pull-out method respectively. Based on steepest descent method, the code FIT is developed to au- tomatically search for the optimal parameters by fitting the measured experimental data. Then the empirical formula is obtained to describe the relation between viscosity and surface tension coefficient of castor oil.
出处
《物理实验》
北大核心
2010年第4期38-40,46,共4页
Physics Experimentation
基金
国家自然科学专项基金项目(科学部主任基金)(No.10947180)
关键词
黏度
表面张力
最速下降法
经验公式
viscosity
surface tension
steepest descent method
empirical formula
