“自制四端低值电阻”开放实验教学的实践  

Practice on open experimental teaching of“Self-made four-terminal low-value resistor”

作　　者：王婷[1] 田俊红[1] 

机构地区：[1]兰州交通大学数理学院,甘肃兰州730070

出　　处：《实验技术与管理》2017年第9期185-187,共3页Experimental Technology and Management

基　　金：甘肃省自然科学基金项目(148RJZA027);兰州交通大学实验教改项目(201623)

摘　　要：将自制四端低值电阻的标定用于开放实验中,不仅可提高学生综合使用实验仪器及动手的能力,还可加深学生对测量不确定度理论知识的理解。实验中让学生自主选择制作材料、实验器材、设计实验电路、确定实验方法。用非等精度测量法测量自制四端低值电阻。应用测量不确定度理论,采用加权平均法,给出测量结果的不确定度。开放模式的实验教学设备利用率高、实验效果好,有利于培养学生的实践和创新能力。The calibration of the＂Four-terminal low-value resistor＂is used in the open experiment,which can not only improve the students＇ comprehensive use of experimental instruments and their hands-on ability,but also deepen their understanding of the theoretical knowledge of measurement uncertainty.In the experiment,the students are allowed to choose the materials and experimental equipment,design the experimental circuit,and determine the experimental methods by themselves.The unequal precision measurement is used to measure the＂Self-made four-terminal low value resistor＂.The uncertainty theory of measurement and the weighted average method are applied to obtain the uncertainty of the measurement results.The experimental teaching equipment with the open mode has the high utilization ratio and the good experimental effect,which is beneficial for training the students＇ practical and innovative ability.

关 键 词：开放实验 低阻值 非等精度 不确定度 

分 类 号：O4-8[理学—物理] G642.423[文化科学—高等教育学]