Features: 1.During operation, place the Stirling engine model in a horizontal position (best placed on the flat glass), inject alcohol into the alcohol lamp, ensure safety and turn on the alcohol lamp. 2.The alcohol lamp will heat the piston tube to make the dry air expands to generate power, and then turn the wheel by hand to make it rotate rapidly, and the lamp will light up. 3.Through hands-on operation, you can observe the entire process of Stirling engine operation, more intuitive understanding of Stirling principles, and deepen your interest in physics. 4.In addition, its superior quality and exquisite appearance also make it a high collection value, which can be sent as a high-end gift. 5.Selection of high-quality materials, the body is made of zinc alloy and the bottom plate is made of aluminum alloy. specification: During operation, place the Stirling engine model in a horizontal position (best placed on the flat glass), inject alcohol into the alcohol lamp, ensure safety and turn on the alcohol lamp. The alcohol lamp will heat the piston tube to make the dry air expands to generate power, and then turn the wheel by hand to make it rotate rapidly, and the lamp will light up. Through hands-on operation, you can observe the entire process of Stirling engine operation, 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 collection value, which can be sent as a high-end gift. Selection of high-quality materials, the body is made of zinc alloy and the bottom plate is made of aluminum alloy. The cylinder is made of hot quartz glass, with high temperature resistance and fracture resistance. Overall polished, bright color, not easy to rust and fade, with high-end texture. : Condition: Brand New Item Type: Stirling Engine Material: Metal, Glass Color: Silver Package List: 1 x Stirling Engine 1 x Bulb (Random Color) 1 x Rubber Band (Random Color) 1 x Alcohol Cylinder 1 x Quartz Tube 1 x Small Light Note: 1. Use 95% alcohol (not included), can not add water, kerosene, gasoline, lighter oil, liquor, candles. 2. The piston must be rotated to prevent squeezing during adjustment and the two links cannot be removed outward.