1 май 1752 г. - Benjamin Franklin Invention
Описание:
In 1752, Benjamin Franklin made the lighting rod . He tested out a theory that he would put a handkerchief to two crossed sticks of proper length into a kite. His theory didn't work out but other people tried it and it somehow worked for them.Добавлено на ленту времени:
Дата:
1 май 1752 г.
Сейчас
~ 273 г назад