FEATURES:
- Vanes in the Radiometer are alternately dark and light in color
- When the light strikes the vanes it transfers heat to each one but not at the same degree
- Lighter vane reflects the rays and darker vane absorbs the rays
- Stronger the light, the more energy there is causing the vanes to spin faster
Used with permission, copyright ©2014 TEDCO TOYS® & Hobbico, Inc.
Copyright ©2014 Brey Corp. t/a Hobby Works