摘要
用双臂电桥测量一定温度下铜导线的电阻，进而计算得到铜线的电导率，再根据维德曼-夫兰兹定律得到铜线的热导率．
Calculates the electric conductivity of the wire by measuring the resistance under certain temperature with two - arm bridge,and then calculates the electric conductivity of the wire based on the law of Wiedemann - Franz. The result shows that measuring the thermal conductivity of metal with electric method is feasible and has high accuracy.
出处
《物理通报》
2011年第1期46-48,共3页
Physics Bulletin
关键词
维德曼-夫兰兹定律
双臂电桥
热导率
金属导线
Law of Wiedemann - Franz
Two - arm bridge
Thermal conductivity
Metal wires
