The First Telephone
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.
Watch video The First Telephone online without registration, duration hours minute second in high quality. This video was added by user ScienceOnline 21 August 2014, don't forget to share it with your friends and acquaintances, it has been viewed on our site 244,63 once and liked it 3.2 thousand people.