Sunny spinny round thing

fly258 | 12:59 Mon 27th Dec 2004 | How it Works

2 Answers

I have one of the above items, 4 vanes mounted on a pivot enclosed in a glass ball and the vanes spin when exposed to light.

3 questions,

1) What is its correct name?

2) How does it work?

3) How do they enclose it in a hollow glass ball?

Answers

1 to 2 of 2

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moose!

It's called a "Crook's Radiometer".

fly258

Question Author

3) How do they enclose it in a hollow glass ball?

1 to 2 of 2

Do you know the answer?