Template:Potd/2011-01-24 (ja)
This is the Japanese translation of the Picture of the day description page from 24 January 2011.
クルックスのラジオメーター。半真空の気密ガラス管の中に立てた軸に羽根がついている。光を当てると羽根が回る。
Descriptions in other languages:
This is the Japanese translation of the Picture of the day description page from 24 January 2011.
Descriptions in other languages: