The vanes, or wings, affixed to the center pole of this solar radiometer are alternately dark and light in color. When the light strikes these wings it transfers heat to each one - but not to the same degree. The lighter wings reflects the sun's rays and the darker wings absorbs. The stronger the light, the more energy present to heat up the darker side of the wing causing the wings to spin faster. The scientific property that this elegant glass device demonstrates is heat transfer. The wings of the radiometer spin under natural solar light or a regular light bulb. Perfect for science projects, as a gift or as a desk amusement!
Experience this sphere powered by the sun!
Illuminate both your room and your mind with this ingenious Periodic Table Lamp.
Discover how solar cells make electricity with this awesome kit!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
Create beautiful art with this amazing sun paper!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.