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!
See the solar system in action!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
Discover how solar cells make electricity with this awesome kit!
You don’t think recycling is cool? Get a look at this, we’re sure you’ll change your mind!
This illuminated orbiter is great for demonstrations in the astronomy classroom!
View the glory of space with this hi-tech telescope set!