Features: During operation, set the Stirling engine model in a horizontal position (preferably on a flat glass), inject alcohol into an alcohol lamp, ensure safety and turn on the alcohol lamp. Lampa will heat the piston tube so that dry air expands to produce power, then rotate the koło manually so that it rotates quickly and the lampa lights up. With hands-on operation, you can observe the entire process of the Stirling engine, gain a more intuitive understanding of Stirling principles, and deepen your interest in physics. In addition, its superior quality and exquisite appearance also make it a high value collection that can be sent as an exclusive prezent. Selection of high-quality materials, zinc alloy body, and aluminum alloy bottom plate. The cylinder is made of hot quartz glass, resistant to high temperature and cracking. Overall polished, bright color, not easy to rust and fade, with texture. Package list: < o:p>< /o:p> 1 x Stirling engine < o:p>< /o:p> 1 x bulb (random colour)< o:p>< /o:p> 1 x eraser (random colour)< o:p>< /o:p> 1 x Alcohol bottle< o:p>< /o:p> 1 x quartz pipe< o:p>< /o:p> 1 x Small light< o:p>< /o:p> < o:p>< /o:p> 2. The piston must be rotated to prevent compression during adjustment, and the two fasteners cannot be removed outside. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.