Crooke's Radiometer

All the way back in 1873, chemist Sir William Crookes noticed that the sunlight shining on his balance scale was disturbing some of the chemical samples he was weighing. Furrowing his brow, a bit of investigation led him to the invention of the Radiometer, an easy to use example of a heat engine as the by-product of chemical research!

So how does the Radiometer work? Well, your Radiometer consists of an airtight glass bulb with much of the air removed. Inside the bulb is a rotor with 4 metal vanes, which are silver on one side, and black on the other. When exposed to heat or light, the vanes will begin to spin. This is an example of thermodynamics!

You see, the black side of the vanes heats up quicker than the silver, the air molecules left inside the globe heat up when they touch the black side, and cool when they move away from it. This causes a small current of air that turn the vanes, making them spin. So set your Radiometer somewhere where it will be exposed to light or heat, then watch the vanes turn by themselves! At 18cm tall, your Radiometer rotor will spin continuously up to 3,000 RPM!

This is not a toy, made of glass.

(CRK01)


Crooke's Radiometer Reviews

Be The First To Review This Product!

Purchased this product? Help other cool people shop smarter by writing a review for this.

Write a product review

Cool People Also Bought

When people buy the Crooke's Radiometer they normally buy these too:

Magnetic Sand Timer ( 3 Reviews)

Magnetic Sand Timer

$14.95

In Stock
 
spyX Night 'Nocs

spyX Night 'Nocs

$24.95

In Stock ( Only 3 Left! )
 
spyX Micro Spy Light

spyX Micro Spy Light

$12.95

In Stock ( Only 2 Left! )
 
LED Light Up Balance Balls

LED Light Up Balance Balls

$59.95

In Stock ( Only 1 Left! )
 
Glow in the Dark Jelly Balloon Ball

Glow in the Dark Jelly Balloon Ball

$4.95

In Stock
 
Balloon Copter

Balloon Copter

$7.50

In Stock
 
Copper 3 in 1 Pen Tool

Copper 3 in 1 Pen Tool

$7.95

In Stock
 
Rock Tumbler Refill

Rock Tumbler Refill

$19.95 $24.95

In Stock ( Only 1 Left! )
 
20% OFF

More Cool Things From This Category

Most popular sellers from the Gizmos for Guys category:

Cloud Weather Station

Cloud Weather Station

$29.95

In Stock
 
Senior Moment In Progress Desk Warning Sign

Senior Moment In Progress Desk Warning Sign

$14.95

Preorder - Estimated Ship Date: 15 Jun 2018
Squeeze Mouse and Cheese ( 3 Reviews)

Squeeze Mouse and Cheese

$9.95

In Stock
 
Blah Blah Blah Button

Blah Blah Blah Button

$16.95

In Stock
 
Desktop Emojifier Flip Book

Desktop Emojifier Flip Book

$16.95

In Stock
 
Gooey Mesh Keyring

Gooey Mesh Keyring

$4.95

In Stock
 
Syringe Highlighter ( 1 Review)

Syringe Highlighter

From $3.95

See Options
  View Options
The NO Button ( 1 Review)

The NO Button

$14.95

In Stock
 

Give A Gift Of Coolness!

Gift someone a voucher and help them be a cool gift giver too.

Gift Certificate - $50

Gift Certificate - $50

$50.00

In Stock
 
Gift Certificate - $100

Gift Certificate - $100

$100.00

In Stock
 
Gift Certificate - $200

Gift Certificate - $200

$200.00

In Stock
 
Gift Certificate - $500

Gift Certificate - $500

$500.00

In Stock