Product Description

"Solar hot air engine" is a device that absorbs the light energy of solar radiation through a black body, and the air inside it rises impulsively to rotate the impeller when heated. Put the "solar hot air engine" in the sun and adjust the impeller so that the needle tip in the impeller cover is exactly aligned and balanced with the small socket in the center of the impeller. After a while the sun shines, the impeller will gradually rotate, and turn faster and faster, and finally reach a stable rotation