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 high quality texture. Package list: andlt o:pandgt andlt or o:pandgt 1 x Stirling engine andlt o:pandgt andlt or o:pandgt 1 x bulb (random colour)andlt o:pandgt andlt or o:pandgt 1 x eraser (random colour)andlt o:pandgt andlt or o:pandgt 1 x Alcohol bottleandlt o:pandgt andlt or o:pandgt 1 x quartz pipeandlt o:pandgt andlt or o:pandgt 1 x Small lightandlt o:pandgt andlt or o:pandgt andlt o:pandgt andlt or o:pandgt 2. The piston must be rotated to prevent compression during adjustment, and the two fasteners cannot be removed outside.