Solarpowered Rotating Vane Model Clear demonstration of how sunlight converts to motion. This compact, handheld model uses light pressure to spin its vanes, making the conversion from radiant energy to mechanical motion visible and engaging. It doubles as a decorative piece and an educational tool for classrooms and science activities. Key benefits Visualizes energy conversion so learners can see sunlight produce motion. Simple, handson operation requires no batteries or wiring; place in sunlight or under a light bulb and the vanes rotate. Useful for teaching concepts such as light pressure and basic bolometer principles in a tangible way. Attractive as a home decoration that responds to changing light levels, adding an interactive element to windowsills and desks. Portable and easy to use for demonstrations, experiments, and informal learning. Important attributes Function: Lightdriven rotating vanes that illustrate conversion of light to mechanical motion using the light pressure windmill bolometer principle. Compatibility: Activates in direct sunlight and under sufficiently bright artificial light sources such as a strong lamp or bulb. Form factor: Handheld model suitable for closeup observation and smallscale demonstrations. Operation: No external power required; spin begins when exposed to appropriate light intensity. Practical applications Classroom demonstration: Use during physics or environmental science lessons to show how light energy can be converted to motion and to prompt discussion about energy transfer and efficiency. Science fair or experiment: Include as a simple experiment to compare rotation speeds under different light intensities or lamp types. Home or office display: Place on a windowsill or near a lamp as a decorative, interactive piece that responds to ambient light. How to use Place the model in direct sunlight or position it under a bright lamp or bulb. Observe the vanes begin to rotate as light intensity rises. Compare behavior under different lighting conditions to explore the relationship between light and motion. This model is designed for demonstration and educational use and provides a clear, handson way to explore lightdriven motion while also serving as a decorative, interactive object.