This lecture covers the practical realization of the Stirling cycle, including different schemes such as isochoric heating, isothermal expansion, isochoric cooling, and isothermal compression. The slides illustrate the processes involved in each phase, highlighting the changes in pressure, temperature, and energy transfer. The essential concepts of the Carnot and Stirling cycles, efficiency calculations, and heat exchange relations are also discussed, emphasizing the need for two heat sources at different temperatures for continuous work production.