探究用比较法测液体粘滞系数  

Probe into the Measurement of Coefficient of Viscosity of Liquid Using Comparison Method

作　　者：周珺[1] 

机构地区：[1]兰州交通大学,甘肃兰州730070

出　　处：《大学物理实验》2011年第2期38-40,共3页Physical Experiment of College

基　　金：国家自然基金资助项目(41075009)

摘　　要：采用间接比较法,就是利用已知的标准量作为参考,通过比较公式,来测量某未知量。该方法可使实验操作过程大为简化,不仅减少了测量量,且单位不必国际化,计算更简单,有效数字位数只由已知标准量来确定,从而提高了测量的精度,使比较公式的物理意义更加明确。该方法使学生的视野大为开阔,为很多的实验,提供了多选方案,为进一步拓展学生的思维,培养学生的创新能力,起到了很大的作用,也为老师开设自选设计性实验开辟了新天地,使大学物理实验更添活力。Indirect comparison method is to measure unknown quantity through comparing formula by taking use of known quantity as reference.This method can simplify the experimental operation,reduced measured quantities and need not SI unit,thereby make the calculation easy.In this method because number of digits of significant figures are defined only by known standard quantities,measurement accuracy is improved and the physical meaning of comparing formula is clearer.This method broaden the vision of students,provided multi-choice plan for many experiments,helped students for expending their mind and culturing innovative ability.It broke new ground for teachers to set up optional designable experiment,and made college physics experiment more active.

关 键 词：比较法 测粘滞系数 物理实验 

分 类 号：O552.421[理学—热学与物质分子运动论]