Stirling engines, with their simplicity, adaptability, and high efficiency, are finding renewed use in the emerging alternative energy economy. 3B Scientific offers a wide range of Stirling engines, including Solar-powered engines, transparent engines, and engine kits. Each engine is useful for conducting investigations of the cyclic conversion of energy to motion, and how this motion can be used to do work. Use these engines to learn about such thermodynamic laws and processes as Boyle’s law, critical points, and the ideal gas law.