L-shape Stirling Engine: the overall shape is novel and unique, the completely silver appearance is cool and eye-catching, the motor is equipped with a small generator and can also be connected to a load night light. High quality: Selected high-quality metal materials, appearance, exquisite workmanship, high-precision tuning of different parts, stable and firm base. How to use: After assembly, put about 2/3 of the alcohol into the alcohol lamp, light the alcohol lamp and place under the heating cylinder for 30 seconds to preheat. Turn the flywheel by hand, it can run at high speed. Meaning and Value: You can practice your hands-on skills, expand your knowledge of physics, and increase your interest in learning.