Desktop Wind Mill Model for Science Education This compact, mechanically driven windmill demonstrates thermal energy conversion in a visible, handson way. It requires no batteries or external power source, making it safe and simple for students and demonstrators to operate and display. Key benefits Handson learning: Lets students and trainees observe thermal to mechanical energy conversion in real time, reinforcing physics and energy concepts through direct experience. Visual test of insulation: Rotation speed changes noticeably when an insulating film is applied, providing a clear, intuitive indicator of heat insulation performance. No power needed: Mechanical operation without batteries or wiring reduces setup time and maintenance, and makes the model suitable for classroom use and display. Versatile display item: Compact and attractive design fits on desks and countertops, serving as both an educational tool and a conversationstarting ornament. Features and attributes Function: Demonstrates thermal energy conversion and shows differences in heat transfer through visible changes in rotation speed. Compatibility: Designed to be used with a testing lamp for controlled thermal input and direct comparison of different film materials. Design: Compact desktop size with a simple mechanical structure for easy handling and demonstration. Performance: Provides immediate, observable differences in rotation speed before and after applying insulating film, making it useful for quick comparisons and demonstrations. Typical applications Classroom experiments in physics or energy education to help students visualize heat transfer and conversion. Retail or trade show demonstrations to compare thermal and insulation properties of films and coatings in an easytounderstand format. Office or lab desktop display that doubles as an educational example of solar and thermal conversion principles. This model is a practical, lowmaintenance tool for educators, demonstrators, and anyone who needs a clear, visual way to compare thermal and insulation properties using a testing lamp and sample films.