What it is and how it works A solar radiometer with rotating vanes that respond to sunlight. When placed in bright sun, the vanes rotate, providing a clear demonstration of energy conversion from light to motion. The instrument is made of glass and is fragile, so handling with care is important. Why you need it Educational value: a straightforward physics teaching tool that shows how sunlight can drive movement, helping students understand energy transfer. Giftability: a thoughtful, creative gift for students or family members who enjoy science and learning at home. Supports curiosity and creativity: encourages children to ask questions, explore concepts, and develop problem solving and scientific thinking. Key attributes Material: glass; fragile; handle gently Age suitability: appropriate for children 14 years and older Functionality: simple, direct demonstration of how sunlight can produce motion Use scenarios Classroom or home science lesson: use during topics on solar energy or energy conversion to illustrate concepts with a handson demonstration. Gift for students or science enthusiasts: a compact, educational present that invites experimentation and discussion. Science club or science fair preparation: serve as a starting point for projects about energy, sunlight, and motion, with opportunities for observation and reporting. Care and safety Handle with care due to glass construction; avoid impact or dropping. Keep away from very young children to prevent breakage; adult supervision recommended.