13 ч 17 мин, 21 июн 1885 г. - Westinghouse invents transformer for alternating current
Описание:
George Westinghouse had over 400 patents to his name | transformer for producing high voltage alternating current | made possible the lighting of cities and operation fo electric streetcars, subways, and electrically powered machinery / appliancesДобавлено на ленту времени:
Дата:
13 ч 17 мин, 21 июн 1885 г.
Сейчас
~ 140 г назад