About Us Contact Us Gallery   Register for Newsletter 
  Search 
 

Home / General Gifts / Solar Radiometer  

Solar Radiometer
 The Crookes radiometer, also known as a light mill, 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, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity. The reason for the rotation was a cause of much scientific debate in the ten years following the invention of the device.
 
   
  1     
Solar Radiometer Large

Crookes radiometer, also known as a light mill. Height=23cm.
Solar Radiometer Small

Crookes radiometer, also known as a light mill. Height=14cm.
 
  Page 1 of 1
  1     
© Copyright Mockana Trading 2010, All rights reserved Site Disclaimer