The First Telephone
240.4 هزار بار بازدید -
10 سال پیش
-
This video demonstrates how to
This video demonstrates how to construct a working model of Alexander Graham Bell's first telephone. This phone was constructed in 1876 and supported Bell's successful patent application for the first telephone.
10 سال پیش
در تاریخ 1393/05/30 منتشر شده
است.
240,492
بـار بازدید شده