Experimental

In these experiments, the melting temperature and heat of transformation of Indium is to be measured at one atmosphere. The temperature may be measured using a copper-constantan thermocouple in conjunction with a digital voltmeter and the calibration data relating the thermocouple voltage to the Celsius temperature difference between its junctions. The pressure dependence of the boiling transition in water can be measured between one and two atmospheres using the pressure-cooker equipped with a copper-constantan thermocouple and a pressure gauge to measure the pressure produced by the various pressure relief weights. A digital stop-watch is provided to measure time. The computer data-acquisition system may be used to follow the temperature of a material as a function of time, and the equipment has been calibrated to convert the thermocouple output into Celsius temperature. Both the Indium metal and the pressure-cooker containing the water may be heated using the electrical hot-plate. The rate of heating may be controlled by adjusting the power level of the hot-plate.
Design an experiment to detect the melting point of Indium. You should consider the effect of constant heat addition or heat loss on the material as it goes through the solid-