(c) What would be the meaning of a temperature gradient within the liquid if it was as shown below by the green arrow? (d) Now plot schematically two different cases of real (physically existing) temperature gradients within the liquid phase starting from the solid-liquid interface. Your case one should represent the conditions for maintaining a flat solidification front instead of a dendritic growth. Your case two should represent the solidification conditions in which planar growth front cannot be maintained and, instead a dendritic solidification front progresses. (Please note that you need a reference to compare your real temperature gradient with. What should it be?) Case 1: Solid Liquid Solid Solid Heat Flow Liquid Liquid e) In order to get Case 1 or Case 2, what should be the direction of heat removal for the major part of the heat in the liquid? Show on the figures for each case. Solid Case 2: Solid Liquid Case 2: Liquid Heat Flow