The Radiometer Toy for a Touch of Science in Your Home
A timeless, decorative radiometer
The Radiometer Toy is distinguished by its round shape, similar to a crystal ball. It is mounted on a trapezoidal support with a wide base that guarantees the radiometer’s balance once placed in its reception area. Its thin glass reveals round blades designed to efficiently capture the sun’s rays. This radiometer gives you the pleasant, wonderful feeling that you’re in a timeless space.
An authentic, functional weather radiometer
The weather radiometer is first and foremost a functional accessory. Once in contact with the rays of light, the black faces of the blades heat up, contrasting with the temperature of the gray faces. This temperature variation causes the blades to rotate. The radiometer toy is therefore the ideal accessory for introducing your children to physics, and starting up learned conversations with friends.
Features of the Radiometer Toy
- Materials: Glass and ABS
- Dimensions: 12.5 cm x 9 cm
- Style : Weather radiometer
- Stand on a piece of furniture in the sun
- Science gift idea
Frequently Asked Questions
How does the Radiometer Toy work?
Light heats the black faces of the blades more than the grey faces. That temperature difference makes the blades rotate, and they turn faster in brighter light.
What is it made of and how big is it?
It is made of glass and ABS and measures 12.5 cm x 9 cm. The round glass bulb sits on a trapezoidal support with a wide base.
Where should I put it?
Put it where it gets sunlight, on a piece of furniture or a windowsill. Without light, the blades will not turn.
Is it a good way to introduce children to physics?
The description suggests so: you can see light energy turn into movement, which starts conversations about physics with children and friends.
Lab protocol What we guarantee with this order Carefully packed to arrive in one piece.



















Martin Fowler –
Sits on my office windowsill and the vanes spin away nicely whenever the sun comes out. Pleasant little thing to glance at between emails. Needs fairly strong light to get going, so don’t expect much on a grey day.
Priya Shah –
third thing I’ve ordered from here and the quality has been consistent again. Glass bulb arrived well wrapped, vanes spin freely and it looks smart next to my plant pots. Knocked off a star only because it’s a touch smaller than the photos made me think. Still happy with it.
Hannah Brooks –
Bought this for my eight-year-old who is currently obsessed with ‘how things work’. He put it on the kitchen windowsill and stood there for ages, then ran off to get a torch to see if that would make it go. It did! Cue a full twenty minutes of him asking why the black sides get pushed away faster than the silver ones. I had to go and look it up myself. Brilliant little thing, and it’s sparked far more conversation than the telly has this week.
Gareth Pugh –
Does what it says. Spins well in direct sun, looks rather smart on the bookshelf. Postie delivered it a day early too.
Margaret Ellison –
Got this for my grandson’s birthday. His little face lit up when it started spinning on the windowsill. Lovely gift.
John Smith –
This radiometer is just the thing for my desk. In the sunlight, it spins and glows—bit of science and art rolled into one. Fascinating effect, keeps me intrigued!
Margaret Brown –
Bought this for my granddaughter’s birthday and she was absolutely chuffed! Watching her face light up with excitement as the radiometer spun in the sunlight was pure joy.