1 Newton's law of cooling is the governing law in conduction heat transfer.
2 In conduction heat transfer, the direction of heat transfer is perpendicular to the lines of constant temperature (isotherms).
3 In its general form, the heat equation is second order in spatial coordinates and first order in time.
4 The amount of heat transfer is directly proportional to the thermal resistance.
5 Extended surfaces (fins) are used to enhance the amount of heat transfer.
6 In conduction heat transfer, heat can be transferred in one dimension only.
7 For a flat plate in parallel flow, critical Reynolds number ($Re_c$) is at a location at which transition to laminar flow begins.
8 For a flat plate in parallel flow, the boundary layer thickness ($\delta$) decreases in the flow direction.
