Your cart is empty.
Your cart is empty.INTRODUCTION:
The radiometer is educational and physical demonstration object that was invented by English physicist Crooks about 100 years ago.
Today the Radiometer has become a home decoration or holiday gift.Of course, it can also be a physics teaching tool.
HOW DOES IT WORK?
The radiometer consists of a glass bulb with a partial vacuum.Inside are four vases which are mounted on a spindle.
The vanes rotate when exposed to sunlight,artificial light or infrared radiation.
Jay Curtis
Reviewed in the United States on February 24, 2025
Wanted one for years - this is the best ive found.
Jon Padilla
Reviewed in the United States on January 6, 2025
Give your 12-13 year old something to think about... by challenging them with science, then turn the table by asking them why and how!! Great quality product very sensitive to light, works inside on a bright sunny day. Recommended..
Kevin J. Armstrong
Reviewed in the United States on September 17, 2024
Love it.
T
Reviewed in the United States on November 26, 2024
Great novelty and conversation starter. It came in perfect condition.
赤坂のお淳
Reviewed in Japan on January 28, 2024
毎年卒業生にさしあげてます とても好評です
mark
Reviewed in the United States on July 22, 2023
The vanes came bent and chipped
Bob C
Reviewed in the United States on June 25, 2023
I bought this to replace one that I'd had for many years, which I managed to knock off its table and break. This one is taller, so it catches the window light more easily and therefore rotates more often.
村田晴義
Reviewed in Japan on May 22, 2023
くるくるまわる光景が素敵です。
Carlos Islas Murguia
Reviewed in Mexico on March 3, 2023
No veo que cumpla su función
Customer
Reviewed in the United States on October 2, 2022
The black coating is chipped all over the place. Warned in product description, but still kinda lame for an ornate piece. As it says the thing works like a charm, chipped black coating or no, so its fine. I'm curious why a more robust coating hasn't been found for these.
Customer
Reviewed in the United States on June 2, 2021
I was able to get mine to spin with a 9 watt led bulb. Very nice item. I must say though it was much smaller than I expected, but it is in fact the dimensions described. Make sure you get the large else you're going to be looking at something microscopic.
Betty Cutler
Reviewed in Canada on December 5, 2021
This reminds me of one that I had many years ago but had gotten broke in a move.It won't work with kitchen light...thinks it above that? but it does work in a calm,leisurely fashion in the Dining room light (it's the chandelier type with 5 bulbs).But put it near a window and it really likes to show off.
brennen
Reviewed in Canada on April 8, 2021
Paint from spinning thing was all over inside of glass
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