Wooden Radiometer

Click the image to zoom

£40.00

In stock

Delivery details

Description

Also known as the light mill or solar engine, the solar radiometer demonstrates with simple physics and movement how light can be transformed into energy. Its invention in 1873 is credited to Sir William Crookes, an English physicist. The black and polished vanes are suspended in the semi-vacuum created inside the radiometer. When exposed to a warm light source, such as the sun or a lamp, the vanes spin. The more powerful the light source the faster the vanes will spin. The black side of the vane absorbs the light faster than the polished side. Air pressure builds and raises the temperature on the back side of the vane causing the spinning motion. Please note that radiometers are hand-made and will vary slightly in size and colour.

Product Details
  • Product Code: 442428
  • Product Dimensions: Base 6 x 6 x 2.5cm. Radiometer 10 x 8cm.
Delivery & Returns
  • Standard UK Mainland Delivery - £4.95
  • UK Offshore Delivery - £12.95
  • Next Day UK Deliveries - £8.00 (Please note that this is next working day, with deliveries made Monday to Friday, excluding public holidays.)
  • EU Deliveries - £19.95
  • International Delivery - We regret that we do not currently deliver to addresses outside the EU

Pre-orders:
If you pre-order an item, the item will be sent to you as soon as it becomes available and you'll receive an email to let you know it's on its way.

Read our full delivery policy here.

UK returns are free - find out more about our returns policy.

Reviews (0)

There are currently no reviews for this product. Be the first to write one!

Write a Review