Product Images
2X 4 Blades Rotating Glass Windmill Solar Powered Crookes Radiometer Light Mill/Educational Teaching Study Tool A
New
In stock
Smart shoppers OnBuy it!
- Earn Cashback on every purchase – spend it instantly on your next order
- Free delivery – on millions of items across the site
- Customers love us – 129,000 Trustpilot reviews and an 'Excellent' rating
€45.13
€57.81
22% off!
+€4.20 Delivery
1%
What is instant Cashback?
Learn More
All prices include VAT.
Interest-free payment options available
See full product description & details
Delivery: Standard (€4.20) | Sat 1st - Sat 8th Aug
Returns: 30 days
180-day payment protection
Most Popular in Science & Discovery Toys
Description & Details
Summary
- Magnificent Glass Radiometer, makes a great gift for the one who have everything.
- All made of glass. Globe is 3.5 inch in diameter and stands 8 inch tall.
- This physical and technical miracle shows you in a clear way how sunlight is converted to energy.
- Place near a window or under incandescent light and watch as the vanes rotate.
- Stained glass craft gifts
2X 4 Blades Rotating Glass Windmill Solar Powered Crookes Radiometer Light Mill/Educational Teaching Study Tool A Description
Magnificent Glass Radiometer, makes a great gift for the one who have everything.
All made of glass. Globe is 3.5 inch in diameter and stands 8 inch tall.
This physical and technical miracle shows you in a clear way how sunlight is converted to .
Place near a window or under incandescent light and watch as the vanes rotate.
Invented in 1873 by the chemist Sir William Crookes as the by-product of some chemical research, the radiometer is made from a glass bulb from which much of the air has been removed to form a partial vacuum. Inside the bulb, a low friction spindle, is a rotor with several (usually four) vertical metal vanes spaced equally around the axis. The vanes are polished or white one side and black the other. When exposed to sunlight, artificial light, or infrared radiation (even the heat of a hand nearby can be enough), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing. Just place near a window or under a direct incandescent light as the vanes only rotates in light (sunlight or incandescent light). The more light shine the globe the faster the vanes rotates.
Colour:Photo Color
Material:Glass
Type: A: base
Package Contents:
2x 4 Blades Rotating Glass Windmill
Details
| OPC | PTGTJNX |
|---|---|
| Codes | 4711998027516 (EAN) |
| Product and Safety Information |
Product Data
| Height | 20cm |
|---|---|
| Width | 11cm |
| Length | 16cm |
| Weight | 0.256kg |
| Colour | Photo Color |
| Size | A |
| Material | Glass |
Compare Sellers for 2X 4 Blades Rotating Glass Windmill Solar Powered Crookes Radiometer Light Mill/Educational Teaching Study Tool A
- New from €49.33
| Seller | Ratings | Warranty | Returns | Price | Delivery | Total | Quantity |
|---|---|---|---|---|---|---|---|
|
Dispatched from:
|
(121 reviews) | - |
30 Days
Free Returns No
|
€45.13
|
+€4.20 Delivery
Est. Delivery:
1st-8th Aug
|
€49.33
|
Earn as you shop with instant Cashback on everything.
No catch, no cost
- Paid into your OnBuy account
- Spend it on your next purchase
- Save it or withdraw it
Become a Cashback VIP
Just 1 purchase unlocks bigger deals & rates