Experience this sphere powered by the sun! The vanes in the Radiometer are alternately dark and light in color. When the light strikes these vanes, it transfers heat to each one - but not at the same degree. The lighter vane reflects the rays and the darker vane absorbs the rays. The stronger the light, the more energy there is causing the vanes to spin faster.
Toy Value Index: 9.10
The Toy Value Index is a Fat Brain Toys exclusive intended to quantify the overal play value of a given toy or game. We do this by taking our customers' feedback on (QUALITY + TIME PLAYED + AGE TRANSCENDENCE)/PRICE.
Fat Brain Index: 8.29
The Fat Brain Index is another Fat Brain Toys exclusive that factors in 14 different traits that we've identified that make a toy "Fat Brain Worthy".
A rating of Radiometer
Posted 12/29/2009 by Larry
Rating:
As advertised. Better quality than the last one I bought years ago from the Denver Museum of Natural History.
Review for Radiometer
Posted 5/5/2009 by Michele Mills
Rating:
Good, but I would prefer it had a suction base so it would stay put on the teacher's desk
Product review of Radiometer
Posted 8/7/2008 by Andre M. Bordelon
Rating:
It takes intense direct sunlight to operate the instrument. This differs from other pricier ones I have seen.
Radiometer and Prism
Posted 3/26/2008 by Fred
Rating:
Setting: Home
We love the radiometer and prism we purchased through Fat Brain toys. Our 5 year old was amazed. He was so excited that he took them to show and tell at school to show all his class mates. I like to get him interested in science and the natural world. Thanks for offering products like this Fat Brain!
Elkhorn, Nebraska USA 68022