Buy Solar Radiometer @ - the world's most popular science store! Science Toys Logo
Science Bubble Home  
About Us  
Contact Us  
Click here to login to your account. My Account  
My Science Shopping Cart Shopping Cart   

Get a FREE Multi-Function Survival Tool with orders over $49.0000.

Multi-Function Survival Tool
Sign-up for discounts:
xUmp Coupon Code: Save 10% OFF Use code: MARCH10
  Enter keyword or item #
Products By Category
  Toys & Gifts
  Science Kits
  Robotics & Electronics
  Optics & Lasers
  Solar Cells & More
  Lab Supplies
  Fossils & Rocks
  Puzzles & Games
  Books & Study Charts
  Science Posters
  Go Green Stuff
  Survival & Safety
  Special Sales
Products by Science
  Earth Science
All Products
  New Products
  Full Category List
  Full Product List
Products By Age & Price
Why Shop Here?

Secure Shopping
100% Satisfaction
90-day Easy Returns
Scientists On Staff
12 Years In Business
Same Day Shipping
FREE Shipping w/$75
International Shipping
Green Company
Located in California, US
March Madness Sale

Solar Radiometer

by Tedco   Product#: 10094   (6 customer reviews)

Deal Price: $12.95 /each
List Price$19.99
You Save:$7.04 (35%)
Currency conversion.
In Stock. Ships today!
Order by 12pm PST/3pm EST.
Add to cart to see shipping prices.

Only 17 left in stock - order soon!
Need More?
Save additional 10% OFF with coupon code: MARCH10
Offer expires tonight at 11:59pm PST.

The vanes, or wings, in this solar radiometer are alternately dark and light in color. When the light strikes these wings it transfers heat to each one - but not at the same degree. The lighter wing reflects the rays and the darker wing absorbs. The stronger the light, the more energy there is to heat up the darker side of the wing causing the wings to spin faster. It spins under the solar light or a regular light bulb. Great for science projects, as a gift or as a desk amusement!


  • Uses heat transfer to spin
  • No batteries required; the radiometer is powered entirely by light
  • Either solar or indoor light works
  • Great desk toy
  • Great for solar science lessons
Recommended for ages 8 and older.

Box Size: 5.25in (13.34cm) x 3.25in (8.26cm) x 3.25in (8.26cm)
Weight: 0 lb 3 oz ( 0.08 kg )

Related Products

Physics Solar Workshop Kit
Buy Physics Solar Workshop Kit.$62.90 /each 
Age: 8+
Item#: 11367
Learn how solar cells transform light into electrical energy with this great kit!

Solar Science Kit
Buy Solar Science Kit.$10.95 /each 
Age: 9+
Item#: 10102
Discover the principles of photovoltaics with this solar science kit!

Featured Bestsellers

Buy Penguin Life Solar Kit.
Penguin Life Solar Kit
$24.95 $19.95
Buy Space Exploration v2.0 TK Kit.
Space Exploration v2.0 TK Kit
$39.99 $33.20
Buy Mini Plasma Ball.
Mini Plasma Ball
$19.99 $14.00
Buy Dancing Oobleck - Fully Assembled.
Dancing Oobleck - Fully Assembled
$99.99 $79.95
Buy Maxwells Wheel - Large.
Maxwells Wheel - Large
$49.99 $39.95

Customer Reviews

  directly observable interesting physics
Posted on: Aug 5 2014 by: Mark ODell from USA, CA, Los Angeles

Motion directly from light never gets old. This motion, however, is not due to photon momentum radiation pressure, or the direct pressure from gas warmed by the black faces. Such simple explanations turn out to be wrong. This is a light-driven heat engine. Even James Clerk Maxwell initially disagreed with Osborne Reynolds about the mechanism, so we are in good company watching and wondering. See Wikipedia Radiometer references for a lucid discussion, but know there is much more going on than the common explanations most of us learned when first seeing a Crookes Radiometer ("light-mill"). Cooling causes direction reversal. Improving the vacuum stops motion altogether. Radiation pressure is real, but the effect is too small here. The important mechanism has more in common with the flow of heat or superfluid helium than the momentum of photons or the pressure of bulk hot gas. The black sides do get hotter, but the ultimate magic of motion apparently happens at the edges of the vanes, not the faces.

  Good Classroom Tool
Posted on: May 27 2014 by: Cynthia from USA, UT, Draper

This is an awesome way for students to learn that solar radiation is a form of energy.

  Radiometer fun
Posted on: Feb 25 2013 by: Maria from Cedar Rapids, IA

Love to watch this work and think about the science behind it. Great tool for teaching about energy.

  Great Conversation Piece!
Posted on: Nov 7 2012 by: Eric Holmes from Moose Jaw, Canada

Everyone that sees it will stop and look at it rotating and then will have a theory on what makes it rotate.

Posted on: Oct 20 2012 by: Joan from Tulsa, Oklahoma

This is so fun. I broke my mother's radiometer, so had to replace it. A good price for a great product.

Posted on: Sep 4 2012 by: from

intriguing, fun

Search by keyword or item #             Browse Product Categories Red Tree Frog Mascot About Us
About Us
Press Releases
Legal Info
Privacy Statement
Help / Support
Shipping Info
School PO Info
Customer Support
Contact Us
We Accept:
We accept: Visa, MasterCard, American Express, Discover and PayPal.
We are a Green company. We run our operations in an envoromentally consious way and we sell many green science kits and toys.
is a
Green Company!
more info
Follow Us:
Become our Friend on Facebook Follow us on Instagram  See our Videos on Vine Follow us on Twitter Check out our videos on YouTube is Upfront
Transaction Processing
Safe Shopping & Privacy Guarantee
We use best encryption and are PCI compliant
with daily audits! We do NOT store your credit card
number and we do NOT share your personal
information with anyone!

All rights reserved. © Copyright 2003-2015, 4007 Paramount Blvd. Suite 105, Lakewood, CA 90712