测量金属导线热导率的新方法

New Method to Measure Themaml Conductirity of Wire

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.