I have a machine that is dated 23 November 1914 and there are models in advance of this one namely, A, E and F of the same series.
A battery that was wired to a needle that converted sound waves into an electric signal which traveled along a wire to a receiver made the first telephone work. It was invented by Alexander Graham Bell.
devices for telegraph he made inprovments in tecnology he invented cuplox telegraph electric pen for telegraph inprovments in telephone tec
i believe Alexander Graham Bell made the telephone,but im not sure...
what would have been the most popular candle stick telelphone during the early 1900's that most upper class families would have in their homes, and how did the calling sytem work? was there an oporater? thanks
his hardest invention was the telephone
the lates telephone was invented in 2013
A simi-variable cost has both variable and fixed factors. An organization's telephone and electric costs are simi- variable. These costs are fixed. However, if more electricity is used, or more telephone calls are made in a given period, they become variable.
No one made the electric eel, it is an animal.
It was made of steel.
The telephone was invented in 1876, by Alexander Graham Bell
It is generally considered that great inventions made possible by science and technology include such things as the electric light bulb, the steam engine, the internal combustion engine, the electric generator, the telephone, the television, the computer, and the nuclear bomb.
The first electric toothbrush was made in Switzerland!