Description

• Table decoration:Rotating Vanes Desk Toy can be used for decoration in offices, living rooms, bedrooms, classrooms, study rooms, parties, etc.
• Principle: When the light black fan absorbs heat energy, white fan releases heat energy, it can promote the four fans rotation.
• Material:Solar Power Crookes is made of glass, great for Physics teaching tool.
• Automatic rotating:The glass Radiometer will rotate automatically under the sunlight or strong irradiation.
• Educational: Glass Windmill with an internal vacuum. It can rotate by itself through light, and can also rotate in the opposite direction through cold wind.