Experience the wonder of light energy with the DORAMI Radiometer. This exquisite blue, handmade glass radiometer spins faster as it absorbs sunlight, artificial light, or infrared radiation. A perfect desktop or windowsill decoration for your office, living room, or classroom, it also serves as a fascinating educational tool. Teach and learn principles of light refraction, air friction, and vacuum physics while enjoying the mesmerizing motion. A thoughtful and creative gift that continuously rotates with light exposure, symbolizing everlasting friendships and emotions.