ABSTRACT
In order to get conductivity, the temperature gradient must be measured, and at the same time the heat transferred q need to be known.
Therefore, the design used a thermal resistance as a point heat source, put it into heat conduction trough which had liquid to be measured, and put the conduction trough into thermostat water bath. When the thermal resistance was energized, it can formed temperature change and a certain temperature gradient field in measured liquid.
