Nauticalia Radiometer – Clear – 16cm

Description

These new and mesmerising instruments from Nauticalia will measure the power of electromagnetic radiation.
The glass bulb has had much of the air removed, thus forming a partial vacuum. Inside is a set of fine metal vanes, each with one dark and one light side – mounted on a spindle. As the vanes rotate, when they are exposed to sunlight, artificial light or infrared radiation the more intense the light and faster the rotation.
They are pretty magical to watch.
 
Product Code:7689