Heat transfer. The gas stream temperature is to be measured using a thermocouple with a junction that can be approximat 1.0 mm diameter sphere. The junction's thermal conductivity is k = 79 W m1K1, and the heat transfer coefficient between the junction and the gas is h = 150 W m2K1. Calculate the Biot number of the junction under these conditions. Provide the answer to five decimal places and enter the numerical value only (e.g. 0.12345). Add your answer