Joseph Henry (1 янв 1830 г. – 1 янв 1830 г.)
Описание:
Joseph Henry, discovered the principles of the dynamo – induction when lines of force that pass from north to south pole of a magnet are cut by a wireДобавлено на ленту времени:
Дата:
1 янв 1830 г.
1 янв 1830 г.
~ 0 min