One spin of the flywheel and this Low Temperature Stirling Engine shows a clean and simple way of converting thermal energy into motion. <br /> <br />This engine will operate from many heat sources, including hot water, computer monitor, TV and the human hand. As long as there is a small difference (about 10 degrees) in temperature between the upper and lower plates this engine will run. <br /> <br />This Low Temperature Stirling Engine has black anodised aluminium top and bottom plates. Aluminium has excellent thermal properties, and conducts heat very efficiently.