Give us a call +44 (0)1436 670806 | Click Here For Contact Info

Crooke's Solar Radiometer, Tapered Clear Stem, Clear Globe

$31.00

Solar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.

The Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.

These days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.

Material: Glass

Dimensions: 185mm x 60mm

Weight: 46 grams

Our Address

Curious Minds Science Ltd (Grasshopper Toys)
112 West Princes Street
Helensburgh
Argyll & Bute

G84 8XD

United Kingdom

Phone
+44(0)1436 670806

Refer a Friend. Earn Passive Income!

If you love what we do, and want to earn some passive income, our affiliate scheme is perfect for you. Here's the rundown:

  • Sign up to our affiliate scheme using the link below.
  • Send your referral link to a friend, or embed the link on your blog, website or social media.
    • This link simply takes them to our website, and tells us you sent them there. So we know to pay you and not someone else!
  • Once they place an order, you earn a commission equal to 5% of the total order value.

Join Us & Earn 5% On Each Order!

curiousminds.co.uk affiliate scheme