Single Cylinder Sterling Engine Model Steam Power Physics Science Laboratory Teaching Tool Features: Similar to the working principle of internal combustion engines: Burning alcohol lamps provide power heating to expand the internal gas, thereby increasing the power of the internal molecular gas to act on the flywheel. With the help of the flywheel, thermal energy will be converted into mechanical work. Through hands-on operation, you can observe the entire process of Stirling engine operation, more intuitively understand the working principle of stirling engine, and deepen your interest in physics. The product has been assembled and can be used directly. Superior stainless steel structure, rugged and durable e. An ideal choice as a gift for friends, kids, family and more. Specification: Item Type: Stirling Engine   Material: Stainless Steel Color: As picture   Package List: 1 x Stirling Engine  with LED Light 1 x Sponge 1 x Alcohol Cylinder 1 x Quartz Tube with Iron Wire