The Frenchman Nicolas Léonard Sadi Carnot (1796-1832) developed concepts that founded the Second Law, and at the time he lived the First Law, it was not even known. thermal machine it is the device that operates in cycles, transforming part of the thermal energy (heat) into mechanical energy (work), rejecting the rest of the acquired thermal energy. The big challenge was to create more and more efficient machines. ![]() Thermal machines were the great incentive for studies and, consequently, for the laws of thermodynamics to evolve. ![]() The Second Law, in a more specific and qualitative way, studies the transformation of heat into work, addressed in the First Law. ![]() The First Law of Thermodynamics addresses the conservation of energy in thermodynamic systems and its quantitative characteristic, through the equation that relates heat, work and internal energy.
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