Template:Potd/2011-01-24 (en)

From Wikimedia Commons, the free media repository
Jump to: navigation, search
Radiometer. The Crookes radiometer, also known as the light mill or solar engine, consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of vanes which are mounted on a spindle. The vanes rotate when exposed to light.

This is the English translation of the Picture of the day description page from .

Radiometer. The Crookes radiometer, also known as the light mill or solar engine, consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of vanes which are mounted on a spindle. The vanes rotate when exposed to light.

Descriptions in other languages: